Observation of ηc(2S)→pp¯ and search for X(3872)→pp¯ decays

Aaij, R.; Adeva, B.; Adinolfi, M.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Cartelle, P.; Alves, A. A.; Amato, S.; Amerio, S.; Amhis, Y.; An, L.; Anderlini, L.; Andreassi, G.; Andreotti, M.; Andrews, J. E.; Appleby, R. B.; Aquines Gutierrez, O.; Archilli, F.; d'Argent, P.; Arnau Romeu, J.; Artamonov, A.; Artuso, M.; Aslanides, E.; Auriemma, G.; Baalouch, M.; Babuschkin, I.; Bachmann, S.; Back, J. J.; Badalov, A.; Baesso, C.; Baldini, W.; Barlow, R. J.; Barschel, C.; Barsuk, S.; Barter, W.; Batozskaya, V.; Batsukh, B.; Battista, V.; Bay, A.; Beaucourt, L.; Beddow, J.; Bedeschi, F.; Bediaga, I.; Bel, L. J.; Bellee, V.; Belloli, N.; Belous, K.; Belyaev, I.; Ben-Haim, E.; Bencivenni, G.; Benson, S.; Benton, J.; Berezhnoy, A.; Bernet, R.; Bertolin, A.; Betti, F.; Bettler, M. -O.; van Beuzekom, M.; Bifani, S.; Billoir, P.; Bird, T.; Birnkraut, A.; Bitadze, A.; Bizzeti, A.; Blake, T.; Blanc, F.; Blouw, J.; Blusk, S.; Bocci, V.; Boettcher, T.; Bondar, A.; Bondar, N.; Bonivento, W.; Borgheresi, A.; Borghi, S.; Borisyak, M.; Borsato, M.; Bossu, F.; Boubdir, M.; Bowcock, T. J. V.; Bowen, E.; Bozzi, C.; Braun, S.; Britsch, M.; Britton, T.; Brodzicka, J.; Buchanan, E.; Burr, C.; Bursche, A.; Buytaert, J.; Cadeddu, S.; Calabrese, R.; Calvi, M.; Calvo Gomez, M.; Campana, P.; Campora Perez, D.; Capriotti, L.; Carbone, A.; Carboni, G.; Cardinale, R.; Cardini, A.; Carniti, P.; Carson, L.; Carvalho Akiba, K.; Casse, G.; Cassina, L.; Castillo Garcia, L.; Cattaneo, M.; Cauet, Ch.; Cavallero, G.; Cenci, R.; Charles, M.; Charpentier, Ph.; Chatzikonstantinidis, G.; Chefdeville, M.; Chen, S.; Cheung, S. -F.; Chobanova, V.; Chrzaszcz, M.; Cid Vidal, X.; Ciezarek, G.; Clarke, P. E. L.; Clemencic, M.; Cliff, H. V.; Closier, J.; Coco, V.; Cogan, J.; Cogneras, E.; Cogoni, V.; Cojocariu, L.; Collazuol, G.; Collins, P.; Comerma-Montells, A.; Contu, A.; Cook, A.; Coquereau, S.; Corti, G.; Corvo, M.; Costa Sobral, C. M.; Couturier, B.; Cowan, G. A.; Craik, D. C.; Crocombe, A.; Cruz Torres, M.; Cunliffe, S.; Currie, R.; D'Ambrosio, C.; Dall'Occo, E.; Dalseno, J.; David, P. N. Y.; Davis, A.; De Aguiar Francisco, O.; De Bruyn, K.; De Capua, S.; De Cian, M.; De Miranda, J. M.; De Paula, L.; De Simone, P.; Dean, C. -T.; Decamp, D.; Deckenhoff, M.; Del Buono, L.; Demmer, M.; Derkach, D.; Deschamps, O.; Dettori, F.; Dey, B.; Di Canto, A.; Dijkstra, H.; Dordei, F.; Dorigo, M.; Dosil Suárez, A.; Dovbnya, A.; Dreimanis, K.; Dufour, L.; Dujany, G.; Dungs, K.; Durante, P.; Dzhelyadin, R.; Dziurda, A.; Dzyuba, A.; Déléage, N.; Easo, S.; Egede, U.; Egorychev, V.; Eidelman, S.; Eisenhardt, S.; Eitschberger, U.; Ekelhof, R.; Eklund, L.; Elsasser, Ch.; Ely, S.; Esen, S.; Evans, H. M.; Evans, T.; Falabella, A.; Farley, N.; Farry, S.; Fay, R.; Fazzini, D.; Ferguson, D.; Fernandez Albor, V.; Ferrari, F.; Ferreira Rodrigues, F.; Ferro-Luzzi, M.; Filippov, S.; Fiore, M.; Fiorini, M.; Firlej, M.; Fitzpatrick, C.; Fiutowski, T.; Fleuret, F.; Fohl, K.; Fontana, M.; Fontanelli, F.; Forshaw, D. C.; Forty, R.; Franco Lima, V.; Frank, M.; Frei, C.; Fu, J.; Furfaro, E.; Färber, C.; Gallas Torreira, A.; Galli, D.; Gallorini, S.; Gambetta, S.; Gandelman, M.; Gandini, P.; Gao, Y.; García Pardiñas, J.; Garra Tico, J.; Garrido, L.; Garsed, P. J.; Gascon, D.; Gaspar, C.; Gavardi, L.; Gazzoni, G.; Gerick, D.; Gersabeck, E.; Gersabeck, M.; Gershon, T.; Ghez, Ph.; Gianì, S.; Gibson, V.; Girard, O. G.; Giubega, L.; Gizdov, K.; Gligorov, V. V.; Golubkov, D.; Golutvin, A.; Gomes, A.; Gorelov, I. V.; Gotti, C.; Grabalosa Gándara, M.; Graciani Diaz, R.; Granado Cardoso, L. A.; Graugés, E.; Graverini, E.; Graziani, G.; Grecu, A.; Griffith, P.; Grillo, L.; Gruberg Cazon, B. R.; Grünberg, O.; Gushchin, E.; Guz, Yu.; Gys, T.; Göbel, C.; Hadavizadeh, T.; Hadjivasiliou, C.; Haefeli, G.; Haen, C.; Haines, S. C.; Hall, S.; Hamilton, B.; Han, X.; Hansmann-Menzemer, S.; Harnew, N.; Harnew, S. T.; Harrison, J.; Hatch, M.; He, J.; Head, T.; Heister, A.; Hennessy, K.; Henrard, P.; Henry, L.; Hernando Morata, J. A.; van Herwijnen, E.; Heß, M.; Hicheur, A.; Hill, D.; Hombach, C.; Hulsbergen, W.; Humair, T.; Hushchyn, M.; Hussain, N.; Hutchcroft, D.; Idzik, M.; Ilten, P.; Jacobsson, R.; Jaeger, A.; Jalocha, J.; Jans, E.; Jawahery, A.; John, M.; Johnson, D.; Jones, C. R.; Joram, C.; Jost, B.; Jurik, N.; Kandybei, S.; Kanso, W.; Karacson, M.; Kariuki, J. M.; Karodia, S.; Kecke, M.; Kelsey, M.; Kenyon, I. R.; Kenzie, M.; Ketel, T.; Khairullin, E.; Khanji, B.; Khurewathanakul, C.; Kirn, T.; Klaver, S.; Klimaszewski, K.; Koliiev, S.; Kolpin, M.; Komarov, I.; Koopman, R. F.; Koppenburg, P.; Kozachuk, A.; Kozeiha, M.; Kravchuk, L.; Kreplin, K.; Kreps, M.; Krokovny, P.; Kruse, F.; Krzemien, W.; Kucewicz, W.; Kucharczyk, M.; Kudryavtsev, V.; Kuonen, A. K.; Kurek, K.; Kvaratskheliya, T.; Lacarrere, D.; Lafferty, G.; Lai, A.; Lambert, D.; Lanfranchi, G.; Langenbruch, C.; Langhans, B.; Latham, T.; Lazzeroni, C.; Le Gac, R.; van Leerdam, J.; Lees, J. -P.; Leflat, A.; Lefrançois, J.; Lefèvre, R.; Lemaitre, F.; Lemos Cid, E.; Leroy, O.; Lesiak, T.; Leverington, B.; Li, Y.; Likhomanenko, T.; Lindner, R.; Linn, C.; Lionetto, F.; Liu, B.; Liu, X.; Loh, D.; Longstaff, I.; Lopes, J. H.; Lucchesi, D.; Lucio Martinez, M.; Luo, H.; Lupato, A.; Luppi, E.; Lupton, O.; Lusiani, A.; Lyu, X.; Machefert, F.; Maciuc, F.; Maev, O.; Maguire, K.; Malde, S.; Malinin, A.; Maltsev, T.; Manca, G.; Mancinelli, G.; Manning, P.; Maratas, J.; Marchand, J. F.; Marconi, U.; Marin Benito, C.; Marino, P.; Marks, J.; Martellotti, G.; Martin, M.; Martinelli, M.; Martinez Santos, D.; Martinez Vidal, F.; Martins Tostes, D.; Massacrier, L. M.; Massafferri, A.; Matev, R.; Mathad, A.; Mathe, Z.; Matteuzzi, C.; Mauri, A.; Maurin, B.; Mazurov, A.; McCann, M.; McCarthy, J.; McNab, A.; McNulty, R.; Meadows, B.; Meier, F.; Meissner, M.; Melnychuk, D.; Merk, M.; Merli, A.; Michielin, E.; Milanes, D. A.; Minard, M. -N.; Mitzel, D. S.; Molina Rodriguez, J.; Monroy, I. A.; Monteil, S.; Morandin, M.; Morawski, P.; Mordà, A.; Morello, M. J.; Moron, J.; Morris, A. B.; Mountain, R.; Muheim, F.; Mulder, M.; Mussini, M.; Müller, D.; Müller, J.; Müller, K.; Müller, V.; Naik, P.; Nakada, T.; Nandakumar, R.; Nandi, A.; Nasteva, I.; Needham, M.; Neri, N.; Neubert, S.; Neufeld, N.; Neuner, M.; Nguyen, A. D.; Nguyen-Mau, C.; Nieswand, S.; Niet, R.; Nikitin, N.; Nikodem, T.; Novoselov, A.; O'Hanlon, D. P.; Oblakowska-Mucha, A.; Obraztsov, V.; Ogilvy, S.; Oldeman, R.; Onderwater, C. J. G.; Otalora Goicochea, J. M.; Otto, A.; Owen, P.; Oyanguren, A.; Pais, P. R.; Palano, A.; Palombo, F.; Palutan, M.; Panman, J.; Papanestis, A.; Pappagallo, M.; Pappalardo, L. L.; Pappenheimer, C.; Parker, W.; Parkes, C.; Passaleva, G.; Patel, G. D.; Patel, M.; Patrignani, C.; Pearce, A.; Pellegrino, A.; Penso, G.; Pepe Altarelli, M.; Perazzini, S.; Perret, P.; Pescatore, L.; Petridis, K.; Petrolini, A.; Petrov, A.; Petruzzo, M.; Picatoste Olloqui, E.; Pietrzyk, B.; Pikies, M.; Pinci, D.; Pistone, A.; Piucci, A.; Playfer, S.; Plo Casasus, M.; Poikela, T.; Polci, F.; Poluektov, A.; Polyakov, I.; Polycarpo, E.; Pomery, G. J.; Popov, A.; Popov, D.; Popovici, B.; Potterat, C.; Price, E.; Price, J. D.; Prisciandaro, J.; Pritchard, A.; Prouve, C.; Pugatch, V.; Puig Navarro, A.; Punzi, G.; Qian, W.; Quagliani, R.; Rachwal, B.; Rademacker, J. H.; Rama, M.; Ramos Pernas, M.; Rangel, M. S.; Raniuk, I.; Raven, G.; Redi, F.; Reichert, S.; dos Reis, A. C.; Remon Alepuz, C.; Renaudin, V.; Ricciardi, S.; Richards, S.; Rihl, M.; Rinnert, K.; Rives Molina, V.; Robbe, P.; Rodrigues, A. B.; Rodrigues, E.; Rodriguez Lopez, J. A.; Rodriguez Perez, P.; Rogozhnikov, A.; Roiser, S.; Romanovskiy, V.; Romero Vidal, A.; Ronayne, J. W.; Rotondo, M.; Rudolph, M. S.; Ruf, T.; Ruiz Valls, P.; Saborido Silva, J. J.; Sadykhov, E.; Sagidova, N.; Saitta, B.; Salustino Guimaraes, V.; Sanchez Mayordomo, C.; Sanmartin Sedes, B.; Santacesaria, R.; Santamarina Rios, C.; Santimaria, M.; Santovetti, E.; Sarti, A.; Satriano, C.; Satta, A.; Saunders, D. M.; Savrina, D.; Schael, S.; Schellenberg, M.; Schiller, M.; Schindler, H.; Schlupp, M.; Schmelling, M.; Schmelzer, T.; Schmidt, B.; Schneider, O.; Schopper, A.; Schubert, K.; Schubiger, M.; Schune, M. -H.; Schwemmer, R.; Sciascia, B.; Sciubba, A.; Semennikov, A.; Sergi, A.; Serra, N.; Serrano, J.; Sestini, L.; Seyfert, P.; Shapkin, M.; Shapoval, I.; Shcheglov, Y.; Shears, T.; Shekhtman, L.; Shevchenko, V.; Shires, A.; Siddi, B. G.; Silva Coutinho, R.; Silva de Oliveira, L.; Simi, G.; Sirendi, M.; Skidmore, N.; Skwarnicki, T.; Smith, E.; Smith, I. T.; Smith, J.; Smith, M.; Snoek, H.; Sokoloff, M. D.; Soler, F. J. P.; Souza, D.; Souza De Paula, B.; Spaan, B.; Spradlin, P.; Sridharan, S.; Stagni, F.; Stahl, M.; Stahl, S.; Stefko, P.; Stefkova, S.; Steinkamp, O.; Stemmle, S.; Stenyakin, O.; Stevenson, S.; Stoica, S.; Stone, S.; Storaci, B.; Stracka, S.; Straticiuc, M.; Straumann, U.; Sun, L.; Sutcliffe, W.; Swientek, K.; Syropoulos, V.; Szczekowski, M.; Szumlak, T.; T'Jampens, S.; Tayduganov, A.; Tekampe, T.; Tellarini, G.; Teubert, F.; Thomas, C.; Thomas, E.; van Tilburg, J.; Tisserand, V.; Tobin, M.; Tolk, S.; Tomassetti, L.; Tonelli, D.; Topp-Joergensen, S.; Toriello, F.; Tournefier, E.; Tourneur, S.; Trabelsi, K.; Traill, M.; Tran, M. T.; Tresch, M.; Trisovic, A.; Tsaregorodtsev, A.; Tsopelas, P.; Tully, A.; Tuning, N.; Ukleja, A.; Ustyuzhanin, A.; Uwer, U.; Vacca, C.; Vagnoni, V.; Valat, S.; Valenti, G.; Vallier, A.; Vazquez Gomez, R.; Vazquez Regueiro, P.; Vecchi, S.; van Veghel, M.; Velthuis, J. J.; Veltri, M.; Veneziano, G.; Venkateswaran, A.; Vernet, M.; Vesterinen, M.; Viaud, B.; Vieira, D.; Vieites Diaz, M.; Vilasis-Cardona, X.; Volkov, V.; Vollhardt, A.; Voneki, B.; Voong, D.; Vorobyev, A.; Vorobyev, V.; Voß, C.; de Vries, J. A.; Vázquez Sierra, C.; Waldi, R.; Wallace, C.; Wallace, R.; Walsh, J.; Wang, J.; Ward, D. R.; Wark, H. M.; Watson, N. K.; Websdale, D.; Weiden, A.; Whitehead, M.; Wicht, J.; Wilkinson, G.; Wilkinson, M.; Williams, M.; Williams, M. P.; Williams, M.; Williams, T.; Wilson, F. F.; Wimberley, J.; Winn, M.; Wishahi, J.; Wislicki, W.; Witek, M.; Wormser, G.; Wotton, S. A.; Wraight, K.; Wright, S.; Wyllie, K.; Xie, Y.; Xing, Z.; Xu, Z.; Yang, Z.; Yin, H.; Yu, J.; Yuan, X.; Yushchenko, O.; Zangoli, M.; Zarebski, K. A.; Zavertyaev, M.; Zhang, L.; Zhang, Y.; Zhang, Y.; Zhelezov, A.; Zheng, Y.; Zhokhov, A.; Zhukov, V.; Zucchelli, S.

doi:10.1016/j.physletb.2017.03.046

Title: Observation of $η_{c} (2 S) \to p \bar{p}$ and search for $X (3872) \to p \bar{p}$ decays

Abstract

The first observation of the decay $η_{c} (2 S) \to p \bar{p}$ is reported using proton–proton collision data corre-sponding to an integrated luminosity of 3.0fb^–1recorded by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The η_c(2S) resonance is produced in the decay B⁺→[$$c\bar{c}$$]K⁺. The product of branching fractions normalised to that for the J/ψ intermediate state, $$\mathscr{R}_{η_{c}(2S)}$$, is measured to be $$\mathscr{R}_{η_{c}(2S)}$$ ≡ $$\frac{\mathscr{B}(B^{+}→η_{c}(2S)K^{+})×\mathscr{B}(η_{c}(2S)→ p\overline{p})}{\mathscr{B}(B^{+}→ J/ψ K^{+})×\mathscr{B}(J/ψ →p\overline{p})}$$ = (1.58±0.33±0.09)×10^–2, where the first uncertainty is statistical and the second systematic. No signals for the decays B⁺ → X(3872)(→$$p\overline{p}$$)K⁺ and B⁺ →ψ(3770)(→$$p\overline{p}$$)K⁺ are seen, and the 95% confidence level upper limits on their relative branching ratios are found to be $$\mathscr{R}_{X(3872)}$$ < 0.25 ×10^–2 and $$\mathscr{R}_{ψ(3770)}$$ < 0.10. In addition, the mass differences between the η_c(1S)and the J/ψ states, between the η_c(2S)and the ψ(2S)states, and the natural width of the η_c(1S)are measured as M_J/ψ – M_ηc(1S) = 110.2±0.5 ±0.9 MeV, M_ψ(2S) – M_ηc(2S) = 52.5±1.7±0.6 MeV, Γ_ηc(1S) = 34.0±1.9±1.3MeV.

Authors:

Aaij, R.; Adeva, B.; Adinolfi, M.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Cartelle, P.; Alves, A. A.; Amato, S.; Amerio, S.; Amhis, Y.; An, L.; Anderlini, L.; Andreassi, G.; Andreotti, M.; Andrews, J. E. more »

Publication Date:: Thu Jun 01 00:00:00 EDT 2017

Research Org.:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

Contributing Org.:: LHCb Collaboration

OSTI Identifier:: 1525224

Grant/Contract Number:: AC02-05CH11231

Resource Type:: Accepted Manuscript

Journal Name:: Physics Letters B

Additional Journal Information:: Journal Volume: 769; Journal Issue: C; Journal ID: ISSN 0370-2693

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats


                    Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Aquines Gutierrez, O., Archilli, F., d'Argent, P., Arnau Romeu, J., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Babuschkin, I., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Batsukh, B., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Bellee, V., Belloli, N., Belous, K., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Betti, F., Bettler, M. -O., van Beuzekom, M., Bifani, S., Billoir, P., Bird, T., Birnkraut, A., Bitadze, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Boettcher, T., Bondar, A., Bondar, N., Bonivento, W., Borgheresi, A., Borghi, S., Borisyak, M., Borsato, M., Bossu, F., Boubdir, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Britsch, M., Britton, T., Brodzicka, J., Buchanan, E., Burr, C., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Calvo Gomez, M., Campana, P., Campora Perez, D., Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Carvalho Akiba, K., Casse, G., Cassina, L., Castillo Garcia, L., Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chatzikonstantinidis, G., Chefdeville, M., Chen, S., Cheung, S. -F., Chobanova, V., Chrzaszcz, M., Cid Vidal, X., Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coquereau, S., Corti, G., Corvo, M., Costa Sobral, C. M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Cruz Torres, M., Cunliffe, S., Currie, R., D'Ambrosio, C., Dall'Occo, E., Dalseno, J., David, P. N. Y., Davis, A., De Aguiar Francisco, O., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Demmer, M., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Dijkstra, H., Dordei, F., Dorigo, M., Dosil Suárez, A., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dungs, K., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Déléage, N., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Farley, N., Farry, S., Fay, R., Fazzini, D., Ferguson, D., Fernandez Albor, V., Ferrari, F., Ferreira Rodrigues, F., Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fleuret, F., Fohl, K., Fontana, M., Fontanelli, F., Forshaw, D. C., Forty, R., Franco Lima, V., Frank, M., Frei, C., Fu, J., Furfaro, E., Färber, C., Gallas Torreira, A., Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., García Pardiñas, J., Garra Tico, J., Garrido, L., Garsed, P. J., Gascon, D., Gaspar, C., Gavardi, L., Gazzoni, G., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gizdov, K., Gligorov, V. V., Golubkov, D., Golutvin, A., Gomes, A., Gorelov, I. V., Gotti, C., Grabalosa Gándara, M., Graciani Diaz, R., Granado Cardoso, L. A., Graugés, E., Graverini, E., Graziani, G., Grecu, A., Griffith, P., Grillo, L., Gruberg Cazon, B. R., Grünberg, O., Gushchin, E., Guz, Yu., Gys, T., Göbel, C., Hadavizadeh, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., Hatch, M., He, J., Head, T., Heister, A., Hennessy, K., Henrard, P., Henry, L., Hernando Morata, J. A., van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hombach, C., Hulsbergen, W., Humair, T., Hushchyn, M., Hussain, N., Hutchcroft, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Kariuki, J. M., Karodia, S., Kecke, M., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khairullin, E., Khanji, B., Khurewathanakul, C., Kirn, T., Klaver, S., Klimaszewski, K., Koliiev, S., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Kozachuk, A., Kozeiha, M., Kravchuk, L., Kreplin, K., Kreps, M., Krokovny, P., Kruse, F., Krzemien, W., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Le Gac, R., van Leerdam, J., Lees, J. -P., Leflat, A., Lefrançois, J., Lefèvre, R., Lemaitre, F., Lemos Cid, E., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Lindner, R., Linn, C., Lionetto, F., Liu, B., Liu, X., Loh, D., Longstaff, I., Lopes, J. H., Lucchesi, D., Lucio Martinez, M., Luo, H., Lupato, A., Luppi, E., Lupton, O., Lusiani, A., Lyu, X., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Maltsev, T., Manca, G., Mancinelli, G., Manning, P., Maratas, J., Marchand, J. F., Marconi, U., Marin Benito, C., Marino, P., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Martinez Santos, D., Martinez Vidal, F., Martins Tostes, D., Massacrier, L. M., Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Melnychuk, D., Merk, M., Merli, A., Michielin, E., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Molina Rodriguez, J., Monroy, I. A., Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Mulder, M., Mussini, M., Müller, D., Müller, J., Müller, K., Müller, V., Naik, P., Nakada, T., Nandakumar, R., Nandi, A., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen-Mau, C., Nieswand, S., Niet, R., Nikitin, N., Nikodem, T., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Oldeman, R., Onderwater, C. J. G., Otalora Goicochea, J. M., Otto, A., Owen, P., Oyanguren, A., Pais, P. R., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parker, W., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Pepe Altarelli, M., Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petrov, A., Petruzzo, M., Picatoste Olloqui, E., Pietrzyk, B., Pikies, M., Pinci, D., Pistone, A., Piucci, A., Playfer, S., Plo Casasus, M., Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Pomery, G. J., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Puig Navarro, A., Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rama, M., Ramos Pernas, M., Rangel, M. S., Raniuk, I., Raven, G., Redi, F., Reichert, S., dos Reis, A. C., Remon Alepuz, C., Renaudin, V., Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Rives Molina, V., Robbe, P., Rodrigues, A. B., Rodrigues, E., Rodriguez Lopez, J. A., Rodriguez Perez, P., Rogozhnikov, A., Roiser, S., Romanovskiy, V., Romero Vidal, A., Ronayne, J. W., Rotondo, M., Rudolph, M. S., Ruf, T., Ruiz Valls, P., Saborido Silva, J. J., Sadykhov, E., Sagidova, N., Saitta, B., Salustino Guimaraes, V., Sanchez Mayordomo, C., Sanmartin Sedes, B., Santacesaria, R., Santamarina Rios, C., Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schael, S., Schellenberg, M., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schubert, K., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sergi, A., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Siddi, B. G., Silva Coutinho, R., Silva de Oliveira, L., Simi, G., Sirendi, M., Skidmore, N., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Souza, D., Souza De Paula, B., Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Stefko, P., Stefkova, S., Steinkamp, O., Stemmle, S., Stenyakin, O., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Syropoulos, V., Szczekowski, M., Szumlak, T., T'Jampens, S., Tayduganov, A., Tekampe, T., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Toriello, F., Tournefier, E., Tourneur, S., Trabelsi, K., Traill, M., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tully, A., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valat, S., Valenti, G., Vallier, A., Vazquez Gomez, R., Vazquez Regueiro, P., Vecchi, S., van Veghel, M., Velthuis, J. J., Veltri, M., Veneziano, G., Venkateswaran, A., Vernet, M., Vesterinen, M., Viaud, B., Vieira, D., Vieites Diaz, M., Vilasis-Cardona, X., Volkov, V., Vollhardt, A., Voneki, B., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Vázquez Sierra, C., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wang, J., Ward, D. R., Wark, H. M., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wicht, J., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, M., Williams, T., Wilson, F. F., Wimberley, J., Winn, M., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wraight, K., Wright, S., Wyllie, K., Xie, Y., Xing, Z., Xu, Z., Yang, Z., Yin, H., Yu, J., Yuan, X., Yushchenko, O., Zangoli, M., Zarebski, K. A., Zavertyaev, M., Zhang, L., Zhang, Y., Zhang, Y., Zhelezov, A., Zheng, Y., Zhokhov, A., Zhukov, V., and Zucchelli, S. Observation of ηc(2S)→pp¯ and search for X(3872)→pp¯ decays.  United States: N. p., 2017. 
Web.  doi:10.1016/j.physletb.2017.03.046.

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                    Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Aquines Gutierrez, O., Archilli, F., d'Argent, P., Arnau Romeu, J., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Babuschkin, I., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Batsukh, B., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Bellee, V., Belloli, N., Belous, K., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Betti, F., Bettler, M. -O., van Beuzekom, M., Bifani, S., Billoir, P., Bird, T., Birnkraut, A., Bitadze, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Boettcher, T., Bondar, A., Bondar, N., Bonivento, W., Borgheresi, A., Borghi, S., Borisyak, M., Borsato, M., Bossu, F., Boubdir, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Britsch, M., Britton, T., Brodzicka, J., Buchanan, E., Burr, C., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Calvo Gomez, M., Campana, P., Campora Perez, D., Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Carvalho Akiba, K., Casse, G., Cassina, L., Castillo Garcia, L., Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chatzikonstantinidis, G., Chefdeville, M., Chen, S., Cheung, S. -F., Chobanova, V., Chrzaszcz, M., Cid Vidal, X., Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coquereau, S., Corti, G., Corvo, M., Costa Sobral, C. M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Cruz Torres, M., Cunliffe, S., Currie, R., D'Ambrosio, C., Dall'Occo, E., Dalseno, J., David, P. N. Y., Davis, A., De Aguiar Francisco, O., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Demmer, M., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Dijkstra, H., Dordei, F., Dorigo, M., Dosil Suárez, A., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dungs, K., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Déléage, N., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Farley, N., Farry, S., Fay, R., Fazzini, D., Ferguson, D., Fernandez Albor, V., Ferrari, F., Ferreira Rodrigues, F., Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fleuret, F., Fohl, K., Fontana, M., Fontanelli, F., Forshaw, D. C., Forty, R., Franco Lima, V., Frank, M., Frei, C., Fu, J., Furfaro, E., Färber, C., Gallas Torreira, A., Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., García Pardiñas, J., Garra Tico, J., Garrido, L., Garsed, P. J., Gascon, D., Gaspar, C., Gavardi, L., Gazzoni, G., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gizdov, K., Gligorov, V. V., Golubkov, D., Golutvin, A., Gomes, A., Gorelov, I. V., Gotti, C., Grabalosa Gándara, M., Graciani Diaz, R., Granado Cardoso, L. A., Graugés, E., Graverini, E., Graziani, G., Grecu, A., Griffith, P., Grillo, L., Gruberg Cazon, B. R., Grünberg, O., Gushchin, E., Guz, Yu., Gys, T., Göbel, C., Hadavizadeh, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., Hatch, M., He, J., Head, T., Heister, A., Hennessy, K., Henrard, P., Henry, L., Hernando Morata, J. A., van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hombach, C., Hulsbergen, W., Humair, T., Hushchyn, M., Hussain, N., Hutchcroft, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Kariuki, J. M., Karodia, S., Kecke, M., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khairullin, E., Khanji, B., Khurewathanakul, C., Kirn, T., Klaver, S., Klimaszewski, K., Koliiev, S., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Kozachuk, A., Kozeiha, M., Kravchuk, L., Kreplin, K., Kreps, M., Krokovny, P., Kruse, F., Krzemien, W., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Le Gac, R., van Leerdam, J., Lees, J. -P., Leflat, A., Lefrançois, J., Lefèvre, R., Lemaitre, F., Lemos Cid, E., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Lindner, R., Linn, C., Lionetto, F., Liu, B., Liu, X., Loh, D., Longstaff, I., Lopes, J. H., Lucchesi, D., Lucio Martinez, M., Luo, H., Lupato, A., Luppi, E., Lupton, O., Lusiani, A., Lyu, X., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Maltsev, T., Manca, G., Mancinelli, G., Manning, P., Maratas, J., Marchand, J. F., Marconi, U., Marin Benito, C., Marino, P., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Martinez Santos, D., Martinez Vidal, F., Martins Tostes, D., Massacrier, L. M., Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Melnychuk, D., Merk, M., Merli, A., Michielin, E., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Molina Rodriguez, J., Monroy, I. A., Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Mulder, M., Mussini, M., Müller, D., Müller, J., Müller, K., Müller, V., Naik, P., Nakada, T., Nandakumar, R., Nandi, A., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen-Mau, C., Nieswand, S., Niet, R., Nikitin, N., Nikodem, T., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Oldeman, R., Onderwater, C. J. G., Otalora Goicochea, J. M., Otto, A., Owen, P., Oyanguren, A., Pais, P. R., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parker, W., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Pepe Altarelli, M., Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petrov, A., Petruzzo, M., Picatoste Olloqui, E., Pietrzyk, B., Pikies, M., Pinci, D., Pistone, A., Piucci, A., Playfer, S., Plo Casasus, M., Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Pomery, G. J., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Puig Navarro, A., Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rama, M., Ramos Pernas, M., Rangel, M. S., Raniuk, I., Raven, G., Redi, F., Reichert, S., dos Reis, A. C., Remon Alepuz, C., Renaudin, V., Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Rives Molina, V., Robbe, P., Rodrigues, A. B., Rodrigues, E., Rodriguez Lopez, J. A., Rodriguez Perez, P., Rogozhnikov, A., Roiser, S., Romanovskiy, V., Romero Vidal, A., Ronayne, J. W., Rotondo, M., Rudolph, M. S., Ruf, T., Ruiz Valls, P., Saborido Silva, J. J., Sadykhov, E., Sagidova, N., Saitta, B., Salustino Guimaraes, V., Sanchez Mayordomo, C., Sanmartin Sedes, B., Santacesaria, R., Santamarina Rios, C., Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schael, S., Schellenberg, M., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schubert, K., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sergi, A., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Siddi, B. G., Silva Coutinho, R., Silva de Oliveira, L., Simi, G., Sirendi, M., Skidmore, N., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Souza, D., Souza De Paula, B., Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Stefko, P., Stefkova, S., Steinkamp, O., Stemmle, S., Stenyakin, O., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Syropoulos, V., Szczekowski, M., Szumlak, T., T'Jampens, S., Tayduganov, A., Tekampe, T., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Toriello, F., Tournefier, E., Tourneur, S., Trabelsi, K., Traill, M., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tully, A., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valat, S., Valenti, G., Vallier, A., Vazquez Gomez, R., Vazquez Regueiro, P., Vecchi, S., van Veghel, M., Velthuis, J. J., Veltri, M., Veneziano, G., Venkateswaran, A., Vernet, M., Vesterinen, M., Viaud, B., Vieira, D., Vieites Diaz, M., Vilasis-Cardona, X., Volkov, V., Vollhardt, A., Voneki, B., Voong, D., Vorobyev, A., Vorobyev, V., Voß, C., de Vries, J. A., Vázquez Sierra, C., Waldi, R., Wallace, C., Wallace, R., Walsh, J., Wang, J., Ward, D. R., Wark, H. M., Watson, N. K., Websdale, D., Weiden, A., Whitehead, M., Wicht, J., Wilkinson, G., Wilkinson, M., Williams, M., Williams, M. P., Williams, M., Williams, T., Wilson, F. F., Wimberley, J., Winn, M., Wishahi, J., Wislicki, W., Witek, M., Wormser, G., Wotton, S. A., Wraight, K., Wright, S., Wyllie, K., Xie, Y., Xing, Z., Xu, Z., Yang, Z., Yin, H., Yu, J., Yuan, X., Yushchenko, O., Zangoli, M., Zarebski, K. A., Zavertyaev, M., Zhang, L., Zhang, Y., Zhang, Y., Zhelezov, A., Zheng, Y., Zhokhov, A., Zhukov, V., & Zucchelli, S. Observation of ηc(2S)→pp¯ and search for X(3872)→pp¯ decays.  United States.  https://doi.org/10.1016/j.physletb.2017.03.046

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                    Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., Andrews, J. E., Appleby, R. B., Aquines Gutierrez, O., Archilli, F., d'Argent, P., Arnau Romeu, J., Artamonov, A., Artuso, M., Aslanides, E., Auriemma, G., Baalouch, M., Babuschkin, I., Bachmann, S., Back, J. J., Badalov, A., Baesso, C., Baldini, W., Barlow, R. J., Barschel, C., Barsuk, S., Barter, W., Batozskaya, V., Batsukh, B., Battista, V., Bay, A., Beaucourt, L., Beddow, J., Bedeschi, F., Bediaga, I., Bel, L. J., Bellee, V., Belloli, N., Belous, K., Belyaev, I., Ben-Haim, E., Bencivenni, G., Benson, S., Benton, J., Berezhnoy, A., Bernet, R., Bertolin, A., Betti, F., Bettler, M. -O., van Beuzekom, M., Bifani, S., Billoir, P., Bird, T., Birnkraut, A., Bitadze, A., Bizzeti, A., Blake, T., Blanc, F., Blouw, J., Blusk, S., Bocci, V., Boettcher, T., Bondar, A., Bondar, N., Bonivento, W., Borgheresi, A., Borghi, S., Borisyak, M., Borsato, M., Bossu, F., Boubdir, M., Bowcock, T. J. V., Bowen, E., Bozzi, C., Braun, S., Britsch, M., Britton, T., Brodzicka, J., Buchanan, E., Burr, C., Bursche, A., Buytaert, J., Cadeddu, S., Calabrese, R., Calvi, M., Calvo Gomez, M., Campana, P., Campora Perez, D., Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carniti, P., Carson, L., Carvalho Akiba, K., Casse, G., Cassina, L., Castillo Garcia, L., Cattaneo, M., Cauet, Ch., Cavallero, G., Cenci, R., Charles, M., Charpentier, Ph., Chatzikonstantinidis, G., Chefdeville, M., Chen, S., Cheung, S. -F., Chobanova, V., Chrzaszcz, M., Cid Vidal, X., Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Coco, V., Cogan, J., Cogneras, E., Cogoni, V., Cojocariu, L., Collazuol, G., Collins, P., Comerma-Montells, A., Contu, A., Cook, A., Coquereau, S., Corti, G., Corvo, M., Costa Sobral, C. M., Couturier, B., Cowan, G. A., Craik, D. C., Crocombe, A., Cruz Torres, M., Cunliffe, S., Currie, R., D'Ambrosio, C., Dall'Occo, E., Dalseno, J., David, P. N. Y., Davis, A., De Aguiar Francisco, O., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Simone, P., Dean, C. -T., Decamp, D., Deckenhoff, M., Del Buono, L., Demmer, M., Derkach, D., Deschamps, O., Dettori, F., Dey, B., Di Canto, A., Dijkstra, H., Dordei, F., Dorigo, M., Dosil Suárez, A., Dovbnya, A., Dreimanis, K., Dufour, L., Dujany, G., Dungs, K., Durante, P., Dzhelyadin, R., Dziurda, A., Dzyuba, A., Déléage, N., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Eitschberger, U., Ekelhof, R., Eklund, L., Elsasser, Ch., Ely, S., Esen, S., Evans, H. M., Evans, T., Falabella, A., Farley, N., Farry, S., Fay, R., Fazzini, D., Ferguson, D., Fernandez Albor, V., Ferrari, F., Ferreira Rodrigues, F., Ferro-Luzzi, M., Filippov, S., Fiore, M., Fiorini, M., Firlej, M., Fitzpatrick, C., Fiutowski, T., Fleuret, F., Fohl, K., Fontana, M., Fontanelli, F., Forshaw, D. C., Forty, R., Franco Lima, V., Frank, M., Frei, C., Fu, J., Furfaro, E., Färber, C., Gallas Torreira, A., Galli, D., Gallorini, S., Gambetta, S., Gandelman, M., Gandini, P., Gao, Y., García Pardiñas, J., Garra Tico, J., Garrido, L., Garsed, P. J., Gascon, D., Gaspar, C., Gavardi, L., Gazzoni, G., Gerick, D., Gersabeck, E., Gersabeck, M., Gershon, T., Ghez, Ph., Gianì, S., Gibson, V., Girard, O. G., Giubega, L., Gizdov, K., Gligorov, V. V., Golubkov, D., Golutvin, A., Gomes, A., Gorelov, I. V., Gotti, C., Grabalosa Gándara, M., Graciani Diaz, R., Granado Cardoso, L. A., Graugés, E., Graverini, E., Graziani, G., Grecu, A., Griffith, P., Grillo, L., Gruberg Cazon, B. R., Grünberg, O., Gushchin, E., Guz, Yu., Gys, T., Göbel, C., Hadavizadeh, T., Hadjivasiliou, C., Haefeli, G., Haen, C., Haines, S. C., Hall, S., Hamilton, B., Han, X., Hansmann-Menzemer, S., Harnew, N., Harnew, S. T., Harrison, J., Hatch, M., He, J., Head, T., Heister, A., Hennessy, K., Henrard, P., Henry, L., Hernando Morata, J. A., van Herwijnen, E., Heß, M., Hicheur, A., Hill, D., Hombach, C., Hulsbergen, W., Humair, T., Hushchyn, M., Hussain, N., Hutchcroft, D., Idzik, M., Ilten, P., Jacobsson, R., Jaeger, A., Jalocha, J., Jans, E., Jawahery, A., John, M., Johnson, D., Jones, C. R., Joram, C., Jost, B., Jurik, N., Kandybei, S., Kanso, W., Karacson, M., Kariuki, J. M., Karodia, S., Kecke, M., Kelsey, M., Kenyon, I. R., Kenzie, M., Ketel, T., Khairullin, E., Khanji, B., Khurewathanakul, C., Kirn, T., Klaver, S., Klimaszewski, K., Koliiev, S., Kolpin, M., Komarov, I., Koopman, R. F., Koppenburg, P., Kozachuk, A., Kozeiha, M., Kravchuk, L., Kreplin, K., Kreps, M., Krokovny, P., Kruse, F., Krzemien, W., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuonen, A. K., Kurek, K., Kvaratskheliya, T., Lacarrere, D., Lafferty, G., Lai, A., Lambert, D., Lanfranchi, G., Langenbruch, C., Langhans, B., Latham, T., Lazzeroni, C., Le Gac, R., van Leerdam, J., Lees, J. -P., Leflat, A., Lefrançois, J., Lefèvre, R., Lemaitre, F., Lemos Cid, E., Leroy, O., Lesiak, T., Leverington, B., Li, Y., Likhomanenko, T., Lindner, R., Linn, C., Lionetto, F., Liu, B., Liu, X., Loh, D., Longstaff, I., Lopes, J. H., Lucchesi, D., Lucio Martinez, M., Luo, H., Lupato, A., Luppi, E., Lupton, O., Lusiani, A., Lyu, X., Machefert, F., Maciuc, F., Maev, O., Maguire, K., Malde, S., Malinin, A., Maltsev, T., Manca, G., Mancinelli, G., Manning, P., Maratas, J., Marchand, J. F., Marconi, U., Marin Benito, C., Marino, P., Marks, J., Martellotti, G., Martin, M., Martinelli, M., Martinez Santos, D., Martinez Vidal, F., Martins Tostes, D., Massacrier, L. M., Massafferri, A., Matev, R., Mathad, A., Mathe, Z., Matteuzzi, C., Mauri, A., Maurin, B., Mazurov, A., McCann, M., McCarthy, J., McNab, A., McNulty, R., Meadows, B., Meier, F., Meissner, M., Melnychuk, D., Merk, M., Merli, A., Michielin, E., Milanes, D. A., Minard, M. -N., Mitzel, D. S., Molina Rodriguez, J., Monroy, I. A., Monteil, S., Morandin, M., Morawski, P., Mordà, A., Morello, M. J., Moron, J., Morris, A. B., Mountain, R., Muheim, F., Mulder, M., Mussini, M., Müller, D., Müller, J., Müller, K., Müller, V., Naik, P., Nakada, T., Nandakumar, R., Nandi, A., Nasteva, I., Needham, M., Neri, N., Neubert, S., Neufeld, N., Neuner, M., Nguyen, A. D., Nguyen-Mau, C., Nieswand, S., Niet, R., Nikitin, N., Nikodem, T., Novoselov, A., O'Hanlon, D. P., Oblakowska-Mucha, A., Obraztsov, V., Ogilvy, S., Oldeman, R., Onderwater, C. J. G., Otalora Goicochea, J. M., Otto, A., Owen, P., Oyanguren, A., Pais, P. R., Palano, A., Palombo, F., Palutan, M., Panman, J., Papanestis, A., Pappagallo, M., Pappalardo, L. L., Pappenheimer, C., Parker, W., Parkes, C., Passaleva, G., Patel, G. D., Patel, M., Patrignani, C., Pearce, A., Pellegrino, A., Penso, G., Pepe Altarelli, M., Perazzini, S., Perret, P., Pescatore, L., Petridis, K., Petrolini, A., Petrov, A., Petruzzo, M., Picatoste Olloqui, E., Pietrzyk, B., Pikies, M., Pinci, D., Pistone, A., Piucci, A., Playfer, S., Plo Casasus, M., Poikela, T., Polci, F., Poluektov, A., Polyakov, I., Polycarpo, E., Pomery, G. J., Popov, A., Popov, D., Popovici, B., Potterat, C., Price, E., Price, J. D., Prisciandaro, J., Pritchard, A., Prouve, C., Pugatch, V., Puig Navarro, A., Punzi, G., Qian, W., Quagliani, R., Rachwal, B., Rademacker, J. H., Rama, M., Ramos Pernas, M., Rangel, M. S., Raniuk, I., Raven, G., Redi, F., Reichert, S., dos Reis, A. C., Remon Alepuz, C., Renaudin, V., Ricciardi, S., Richards, S., Rihl, M., Rinnert, K., Rives Molina, V., Robbe, P., Rodrigues, A. B., Rodrigues, E., Rodriguez Lopez, J. A., Rodriguez Perez, P., Rogozhnikov, A., Roiser, S., Romanovskiy, V., Romero Vidal, A., Ronayne, J. W., Rotondo, M., Rudolph, M. S., Ruf, T., Ruiz Valls, P., Saborido Silva, J. J., Sadykhov, E., Sagidova, N., Saitta, B., Salustino Guimaraes, V., Sanchez Mayordomo, C., Sanmartin Sedes, B., Santacesaria, R., Santamarina Rios, C., Santimaria, M., Santovetti, E., Sarti, A., Satriano, C., Satta, A., Saunders, D. M., Savrina, D., Schael, S., Schellenberg, M., Schiller, M., Schindler, H., Schlupp, M., Schmelling, M., Schmelzer, T., Schmidt, B., Schneider, O., Schopper, A., Schubert, K., Schubiger, M., Schune, M. -H., Schwemmer, R., Sciascia, B., Sciubba, A., Semennikov, A., Sergi, A., Serra, N., Serrano, J., Sestini, L., Seyfert, P., Shapkin, M., Shapoval, I., Shcheglov, Y., Shears, T., Shekhtman, L., Shevchenko, V., Shires, A., Siddi, B. G., Silva Coutinho, R., Silva de Oliveira, L., Simi, G., Sirendi, M., Skidmore, N., Skwarnicki, T., Smith, E., Smith, I. T., Smith, J., Smith, M., Snoek, H., Sokoloff, M. D., Soler, F. J. P., Souza, D., Souza De Paula, B., Spaan, B., Spradlin, P., Sridharan, S., Stagni, F., Stahl, M., Stahl, S., Stefko, P., Stefkova, S., Steinkamp, O., Stemmle, S., Stenyakin, O., Stevenson, S., Stoica, S., Stone, S., Storaci, B., Stracka, S., Straticiuc, M., Straumann, U., Sun, L., Sutcliffe, W., Swientek, K., Syropoulos, V., Szczekowski, M., Szumlak, T., T'Jampens, S., Tayduganov, A., Tekampe, T., Tellarini, G., Teubert, F., Thomas, C., Thomas, E., van Tilburg, J., Tisserand, V., Tobin, M., Tolk, S., Tomassetti, L., Tonelli, D., Topp-Joergensen, S., Toriello, F., Tournefier, E., Tourneur, S., Trabelsi, K., Traill, M., Tran, M. T., Tresch, M., Trisovic, A., Tsaregorodtsev, A., Tsopelas, P., Tully, A., Tuning, N., Ukleja, A., Ustyuzhanin, A., Uwer, U., Vacca, C., Vagnoni, V., Valat, S., Valenti, G., Vallier, A., Vazquez Gomez, R., Vazquez Regueiro, P., Vecchi, S., van Veghel, M., Velthuis, J. 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"Observation of ηc(2S)→pp¯ and search for X(3872)→pp¯ decays".  United States.  https://doi.org/10.1016/j.physletb.2017.03.046.  https://www.osti.gov/servlets/purl/1525224.

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@article{osti_1525224,

  title        = {Observation of ηc(2S)→pp¯ and search for X(3872)→pp¯ decays},

  author       = {Aaij, R. and Adeva, B. and Adinolfi, M. and Ajaltouni, Z. and Akar, S. and Albrecht, J. and Alessio, F. and Alexander, M. and Ali, S. and Alkhazov, G. and Alvarez Cartelle, P. and Alves, A. A. and Amato, S. and Amerio, S. and Amhis, Y. and An, L. and Anderlini, L. and Andreassi, G. and Andreotti, M. and Andrews, J. E. and Appleby, R. B. and Aquines Gutierrez, O. and Archilli, F. and d'Argent, P. and Arnau Romeu, J. and Artamonov, A. and Artuso, M. and Aslanides, E. and Auriemma, G. and Baalouch, M. and Babuschkin, I. and Bachmann, S. and Back, J. J. and Badalov, A. and Baesso, C. and Baldini, W. and Barlow, R. J. and Barschel, C. and Barsuk, S. and Barter, W. and Batozskaya, V. and Batsukh, B. and Battista, V. and Bay, A. and Beaucourt, L. and Beddow, J. and Bedeschi, F. and Bediaga, I. and Bel, L. J. and Bellee, V. and Belloli, N. and Belous, K. and Belyaev, I. and Ben-Haim, E. and Bencivenni, G. and Benson, S. and Benton, J. and Berezhnoy, A. and Bernet, R. and Bertolin, A. and Betti, F. and Bettler, M. -O. and van Beuzekom, M. and Bifani, S. and Billoir, P. and Bird, T. and Birnkraut, A. and Bitadze, A. and Bizzeti, A. and Blake, T. and Blanc, F. and Blouw, J. and Blusk, S. and Bocci, V. and Boettcher, T. and Bondar, A. and Bondar, N. and Bonivento, W. and Borgheresi, A. and Borghi, S. and Borisyak, M. and Borsato, M. and Bossu, F. and Boubdir, M. and Bowcock, T. J. V. and Bowen, E. and Bozzi, C. and Braun, S. and Britsch, M. and Britton, T. and Brodzicka, J. and Buchanan, E. and Burr, C. and Bursche, A. and Buytaert, J. and Cadeddu, S. and Calabrese, R. and Calvi, M. and Calvo Gomez, M. and Campana, P. and Campora Perez, D. and Capriotti, L. and Carbone, A. and Carboni, G. and Cardinale, R. and Cardini, A. and Carniti, P. and Carson, L. and Carvalho Akiba, K. and Casse, G. and Cassina, L. and Castillo Garcia, L. and Cattaneo, M. and Cauet, Ch. and Cavallero, G. and Cenci, R. and Charles, M. and Charpentier, Ph. and Chatzikonstantinidis, G. and Chefdeville, M. and Chen, S. and Cheung, S. -F. and Chobanova, V. and Chrzaszcz, M. and Cid Vidal, X. and Ciezarek, G. and Clarke, P. E. L. and Clemencic, M. and Cliff, H. V. and Closier, J. and Coco, V. and Cogan, J. and Cogneras, E. and Cogoni, V. and Cojocariu, L. and Collazuol, G. and Collins, P. and Comerma-Montells, A. and Contu, A. and Cook, A. and Coquereau, S. and Corti, G. and Corvo, M. and Costa Sobral, C. M. and Couturier, B. and Cowan, G. A. and Craik, D. C. and Crocombe, A. and Cruz Torres, M. and Cunliffe, S. and Currie, R. and D'Ambrosio, C. and Dall'Occo, E. and Dalseno, J. and David, P. N. Y. and Davis, A. and De Aguiar Francisco, O. and De Bruyn, K. and De Capua, S. and De Cian, M. and De Miranda, J. M. and De Paula, L. and De Simone, P. and Dean, C. -T. and Decamp, D. and Deckenhoff, M. and Del Buono, L. and Demmer, M. and Derkach, D. and Deschamps, O. and Dettori, F. and Dey, B. and Di Canto, A. and Dijkstra, H. and Dordei, F. and Dorigo, M. and Dosil Suárez, A. and Dovbnya, A. and Dreimanis, K. and Dufour, L. and Dujany, G. and Dungs, K. and Durante, P. and Dzhelyadin, R. and Dziurda, A. and Dzyuba, A. and Déléage, N. and Easo, S. and Egede, U. and Egorychev, V. and Eidelman, S. and Eisenhardt, S. and Eitschberger, U. and Ekelhof, R. and Eklund, L. and Elsasser, Ch. and Ely, S. and Esen, S. and Evans, H. M. and Evans, T. and Falabella, A. and Farley, N. and Farry, S. and Fay, R. and Fazzini, D. and Ferguson, D. and Fernandez Albor, V. and Ferrari, F. and Ferreira Rodrigues, F. and Ferro-Luzzi, M. and Filippov, S. and Fiore, M. and Fiorini, M. and Firlej, M. and Fitzpatrick, C. and Fiutowski, T. and Fleuret, F. and Fohl, K. and Fontana, M. and Fontanelli, F. and Forshaw, D. C. and Forty, R. and Franco Lima, V. and Frank, M. and Frei, C. and Fu, J. and Furfaro, E. and Färber, C. and Gallas Torreira, A. and Galli, D. and Gallorini, S. and Gambetta, S. and Gandelman, M. and Gandini, P. and Gao, Y. and García Pardiñas, J. and Garra Tico, J. and Garrido, L. and Garsed, P. J. and Gascon, D. and Gaspar, C. and Gavardi, L. and Gazzoni, G. and Gerick, D. and Gersabeck, E. and Gersabeck, M. and Gershon, T. and Ghez, Ph. and Gianì, S. and Gibson, V. and Girard, O. G. and Giubega, L. and Gizdov, K. and Gligorov, V. V. and Golubkov, D. and Golutvin, A. and Gomes, A. and Gorelov, I. V. and Gotti, C. and Grabalosa Gándara, M. and Graciani Diaz, R. and Granado Cardoso, L. A. and Graugés, E. and Graverini, E. and Graziani, G. and Grecu, A. and Griffith, P. and Grillo, L. and Gruberg Cazon, B. R. and Grünberg, O. and Gushchin, E. and Guz, Yu. and Gys, T. and Göbel, C. and Hadavizadeh, T. and Hadjivasiliou, C. and Haefeli, G. and Haen, C. and Haines, S. C. and Hall, S. and Hamilton, B. and Han, X. and Hansmann-Menzemer, S. and Harnew, N. and Harnew, S. T. and Harrison, J. and Hatch, M. and He, J. and Head, T. and Heister, A. and Hennessy, K. and Henrard, P. and Henry, L. and Hernando Morata, J. A. and van Herwijnen, E. and Heß, M. and Hicheur, A. and Hill, D. and Hombach, C. and Hulsbergen, W. and Humair, T. and Hushchyn, M. and Hussain, N. and Hutchcroft, D. and Idzik, M. and Ilten, P. and Jacobsson, R. and Jaeger, A. and Jalocha, J. and Jans, E. and Jawahery, A. and John, M. and Johnson, D. and Jones, C. R. and Joram, C. and Jost, B. and Jurik, N. and Kandybei, S. and Kanso, W. and Karacson, M. and Kariuki, J. M. and Karodia, S. and Kecke, M. and Kelsey, M. and Kenyon, I. R. and Kenzie, M. and Ketel, T. and Khairullin, E. and Khanji, B. and Khurewathanakul, C. and Kirn, T. and Klaver, S. and Klimaszewski, K. and Koliiev, S. and Kolpin, M. and Komarov, I. and Koopman, R. F. and Koppenburg, P. and Kozachuk, A. and Kozeiha, M. and Kravchuk, L. and Kreplin, K. and Kreps, M. and Krokovny, P. and Kruse, F. and Krzemien, W. and Kucewicz, W. and Kucharczyk, M. and Kudryavtsev, V. and Kuonen, A. K. and Kurek, K. and Kvaratskheliya, T. and Lacarrere, D. and Lafferty, G. and Lai, A. and Lambert, D. and Lanfranchi, G. and Langenbruch, C. and Langhans, B. and Latham, T. and Lazzeroni, C. and Le Gac, R. and van Leerdam, J. and Lees, J. -P. and Leflat, A. and Lefrançois, J. and Lefèvre, R. and Lemaitre, F. and Lemos Cid, E. and Leroy, O. and Lesiak, T. and Leverington, B. and Li, Y. and Likhomanenko, T. and Lindner, R. and Linn, C. and Lionetto, F. and Liu, B. and Liu, X. and Loh, D. and Longstaff, I. and Lopes, J. 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  abstractNote = {The first observation of the decay ηc(2S)→pp¯ is reported using proton–proton collision data corre-sponding to an integrated luminosity of 3.0fb–1recorded by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The ηc(2S) resonance is produced in the decay B+→[$c\bar{c}$]K+. The product of branching fractions normalised to that for the J/ψ intermediate state, $\mathscr{R}_{η_{c}(2S)}$, is measured to be $\mathscr{R}_{η_{c}(2S)}$ ≡ $\frac{\mathscr{B}(B^{+}→η_{c}(2S)K^{+})×\mathscr{B}(η_{c}(2S)→ p\overline{p})}{\mathscr{B}(B^{+}→ J/ψ K^{+})×\mathscr{B}(J/ψ →p\overline{p})}$ = (1.58±0.33±0.09)×10–2, where the first uncertainty is statistical and the second systematic. No signals for the decays B+ → X(3872)(→$p\overline{p}$)K+ and B+ →ψ(3770)(→$p\overline{p}$)K+ are seen, and the 95% confidence level upper limits on their relative branching ratios are found to be $\mathscr{R}_{X(3872)}$ < 0.25 ×10–2 and $\mathscr{R}_{ψ(3770)}$ < 0.10. In addition, the mass differences between the ηc(1S)and the J/ψ states, between the ηc(2S)and the ψ(2S)states, and the natural width of the ηc(1S)are measured as MJ/ψ – Mηc(1S) = 110.2±0.5 ±0.9 MeV, Mψ(2S) – Mηc(2S) = 52.5±1.7±0.6 MeV, Γηc(1S) = 34.0±1.9±1.3MeV.},

  doi          = {10.1016/j.physletb.2017.03.046},

  journal      = {Physics Letters B},

  number       = C,

  volume       = 769,

  place        = {United States},

  year         = {Thu Jun 01 00:00:00 EDT 2017},

  month        = {Thu Jun 01 00:00:00 EDT 2017}

}

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Observation of the decay <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msubsup><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msubsup><mml:mo>→</mml:mo><mml:msup><mml:mrow><mml:mover accent="true"><mml:mi>D</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:mi>ϕ</mml:mi></mml:math>
journal, December 2013

Aaij, R.; Adeva, B.; Adinolfi, M.
Physics Letters B, Vol. 727, Issue 4-5
DOI: 10.1016/j.physletb.2013.10.057

Measurement of CP observables in B± → D(⁎)K± and B± → D(⁎)π± decays
text, January 2018

Aaij, Roel; Adeva, Bernardo; Adinolfi, Marco
RWTH Aachen University
DOI: 10.18154/rwth-2018-222464

Review of Particle Physics
text, January 2012

Beringer, J.; Arguin, J.; Barnett, R.
Deutsches Elektronen-Synchrotron, DESY, Hamburg
DOI: 10.3204/phppubdb-24149

Measurement of the CKM angle $\gamma$ from a combination of LHCb results
text, January 2016

Collaboration, LHCb; Bernet, R.; Müller, K.
Springer
DOI: 10.5167/uzh-129665

The LHCb Detector at the LHC
text, January 2008

Collaboration, LHCb; Bernet, R.; Buechler, A.
Institute of Physics Publishing
DOI: 10.5167/uzh-15788

The Physics of the B Factories
text, January 2014

Bevan, A. J.; Golob, B.; Mannel, T.
Karlsruhe
DOI: 10.5445/ir/1000045322

Measurement of CP observables in B±→D(⁎)K± and B±→D(⁎)π± decays
journal, February 2018

Aaij, R.; Adeva, B.; Adinolfi, M.
Physics Letters B, Vol. 777
DOI: 10.1016/j.physletb.2017.11.070

Measurement of the CKM angle γ using B± → DK± with D → KS0π+π−, KS0K+K− decays
text, January 2018

Aaij, R.; Adeva, B.; Adinolfi, M.
RWTH Aachen University
DOI: 10.18154/rwth-2018-229293

Branching Ratio Measurements of $B_s$ Decays
text, January 2012

De Bruyn, Kristof; Fleischer, Robert; Knegjens, Robert
arXiv
DOI: 10.48550/arxiv.1204.1735

The LHCb Trigger and its Performance in 2011
text, January 2012

Aaij, R.; Albrecht, J.; Alessio, F.
arXiv
DOI: 10.48550/arxiv.1211.3055

Performance of the LHCb RICH detector at the LHC
text, January 2012

Adinolfi, M.; Rinella, G. Aglieri; Albrecht, E.
arXiv
DOI: 10.48550/arxiv.1211.6759

Measurement of the fragmentation fraction ratio $f_{s}/f_{d}$ and its dependence on $B$ meson kinematics
text, January 2013

Collaboration, LHCb; Aaij, R.; Beteta, C. Abellan
arXiv
DOI: 10.48550/arxiv.1301.5286

LHCb Detector Performance
text, January 2014

Collaboration, LHCb; Aaij, R.; Adeva, B.
arXiv
DOI: 10.48550/arxiv.1412.6352

Kernel Estimation in High-Energy Physics
text, January 2000

Cranmer, Kyle S.
arXiv
DOI: 10.48550/arxiv.hep-ex/0011057

Heavy Quark Symmetry in Isosinglet Nonleptonic B-Decays
text, January 2004

Blechman, Andrew E.; Mantry, Sonny; Stewart, Iain W.
arXiv
DOI: 10.48550/arxiv.hep-ph/0410312

Decay Chain Fitting with a Kalman Filter
text, January 2005

Hulsbergen, W. D.
arXiv
DOI: 10.48550/arxiv.physics/0503191

Works referencing / citing this record:

Decay $X (3872) \to π^{0} π^{+} π^{-}$ and $S$ -wave $D^{0} {\bar{D}}^{0} \to π^{+} π^{-}$ scattering length
journal, June 2019

Achasov, N. N.; Shestakov, G. N.
Physical Review D, Vol. 99, Issue 11
DOI: 10.1103/physrevd.99.116023

Study of charmonium production in $${b} $$ b -hadron decays and first evidence for the decay $${{{B}} ^0_{{s}}} \!\rightarrow \phi \phi \phi $$ B s 0 → ϕ ϕ ϕ
journal, September 2017

Aaij, R.; Adeva, B.; Adinolfi, M.
The European Physical Journal C, Vol. 77, Issue 9
DOI: 10.1140/epjc/s10052-017-5151-8

Measurement of the $${\eta _{c}} (1S)$$ production cross-section in $$p $$ $$p $$ collisions at $$\sqrt{s} = 13$$ $$\, \text {TeV}$$
journal, March 2020

Aaij, R.; Beteta, C. Abellán; Ackernley, T.
The European Physical Journal C, Vol. 80, Issue 3
DOI: 10.1140/epjc/s10052-020-7733-0

X(3872) as virtual companion pole of the charm–anticharm state χc1(2P)
journal, October 2019

Giacosa, Francesco; Piotrowska, Milena; Coito, Susana
International Journal of Modern Physics A, Vol. 34, Issue 29
DOI: 10.1142/s0217751x19501732

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Title: Observation of η c (2S)→p p ¯ and search for X(3872)→p p ¯ decays

Abstract

Citation Formats

Heavy quarkonium: progress, puzzles, and opportunities journal, February 2011

Measurements of the Mass and Width of the η c Meson and of an η c ( 2 S ) Candidate journal, April 2004

Observation of η c ′ Production in γ γ Fusion at CLEO journal, April 2004

Measurements of the branching fractions of $B^{+} \to p \bar{p} K^{+}$ decays journal, June 2013

Search for η c ( 2 S ) h c → p p ¯ decays and measurements of the χ c J → p p ¯ branching fractions journal, December 2013

Review of Particle Physics journal, August 2014

Measurement of J / ψ → γ η c decay rate and η c parameters at KEDR journal, November 2014

J / ψ and ψ ( 2 S ) Radiative Transitions to η c journal, January 2009

Erratum: J / ψ and ψ ( 2 S ) Radiative Transitions to η c [Phys. Rev. Lett. 102 , 011801 (2009)] journal, April 2011

Efficient, reliable and fast high-level triggering using a bonsai boosted decision tree journal, February 2013

A brief introduction to PYTHIA 8.1 journal, June 2008

Handling of the generation of primary events in Gauss, the LHCb simulation framework journal, December 2011

The EvtGen particle decay simulation package journal, April 2001

PHOTOS Monte Carlo: a precision tool for QED correctionsin Z and W decays journal, January 2006

Geant4 developments and applications journal, February 2006

Geant4—a simulation toolkit journal, July 2003

The LHCb Simulation Application, Gauss: Design, Evolution and Experience journal, December 2011

Boosted decision trees as an alternative to artificial neural networks for particle identification journal, May 2005

Mass distributions marginalized over per-event errors journal, November 2014

Measurement of the polarization in the decay journal, December 1994

Study of B → X γ decays and determination of | V t d / V t s | journal, September 2010

: A statistical tool to unfold data distributions journal, December 2005

Decay chain fitting with a Kalman filter journal, November 2005

Measurement of the Λ b 0 , Ξ b − , and Ω b − Baryon Masses journal, May 2013

The Large-Sample Distribution of the Likelihood Ratio for Testing Composite Hypotheses journal, March 1938

Heavy quark symmetry in isosinglet non-leptonic B-decays journal, February 2005

Future sensitivity to new physics in B d , B s , and K mixings journal, February 2014

The use of Multiple Measurements in Taxonomic Problems journal, September 1936

The dipion mass spectrum in e+e- annihilation and τ decay: a dynamical (ρ, ω, φ) mixing approach journal, April 2008

Performance of the LHCb RICH detector at the LHC journal, May 2013

The Physics of the B Factories journal, November 2014

Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016 journal, December 2017

Measurement of CP observables in B±→D(∗)K± and B±→D(∗)π± decays text, January 2017

Measurement of CP asymmetry in Bs0 → Ds∓K± decays text, January 2018

LHCb detector performance conference, October 2011

Review of Particle Physics text, January 2018

Measurement of CP asymmetry in B s 0 → D s ∓ K± decays journal, March 2018

Measurement of CP observables in B± → D(⁎)K± and B± → D(⁎)π± decays text, January 2018

Review of Particle Physics text, January 2012

Measurement of the CKM angle $\gamma$ from a combination of LHCb results text, January 2016

The LHCb Detector at the LHC text, January 2008

The Physics of the B Factories text, January 2014

Measurement of CP observables in B±→D(⁎)K± and B±→D(⁎)π± decays journal, February 2018

Measurement of the CKM angle γ using B± → DK± with D → KS0π+π−, KS0K+K− decays text, January 2018

Branching Ratio Measurements of $B_s$ Decays text, January 2012

The LHCb Trigger and its Performance in 2011 text, January 2012

Performance of the LHCb RICH detector at the LHC text, January 2012

Measurement of the fragmentation fraction ratio $f_{s}/f_{d}$ and its dependence on $B$ meson kinematics text, January 2013

LHCb Detector Performance text, January 2014

Kernel Estimation in High-Energy Physics text, January 2000

Heavy Quark Symmetry in Isosinglet Nonleptonic B-Decays text, January 2004

Decay Chain Fitting with a Kalman Filter text, January 2005

Decay X ( 3872 ) → π 0 π + π − and S -wave D 0 D ¯ 0 → π + π − scattering length journal, June 2019

Study of charmonium production in $${b} $$ b -hadron decays and first evidence for the decay $${{{B}} ^0_{{s}}} \!\rightarrow \phi \phi \phi $$ B s 0 → ϕ ϕ ϕ journal, September 2017

Measurement of the $${\eta _{c}} (1S)$$ production cross-section in $$p $$ $$p $$ collisions at $$\sqrt{s} = 13$$ $$\, \text {TeV}$$ journal, March 2020

X(3872) as virtual companion pole of the charm–anticharm state χc1(2P) journal, October 2019

Title: Observation of $η_{c} (2 S) \to p \bar{p}$ and search for $X (3872) \to p \bar{p}$ decays

Heavy quarkonium: progress, puzzles, and opportunities
journal, February 2011

Measurements of the Mass and Width of the $η_{c}$ Meson and of an $η_{c} (2 S)$ Candidate
journal, April 2004

Observation of $η_{c}^{'}$ Production in $γ γ$ Fusion at CLEO
journal, April 2004

Measurements of the branching fractions of $B^{+} \to p \bar{p} K^{+}$ decays
journal, June 2013

Search for $η_{c} (2 S) h_{c} \to p \bar{p}$ decays and measurements of the $χ_{c J} \to p \bar{p}$ branching fractions
journal, December 2013

Review of Particle Physics
journal, August 2014

Measurement of $J / ψ \to γ η_{c}$ decay rate and $η_{c}$ parameters at KEDR
journal, November 2014

$J / ψ$ and $ψ (2 S)$ Radiative Transitions to $η_{c}$
journal, January 2009

Erratum: $J / ψ$ and $ψ (2 S)$ Radiative Transitions to $η_{c}$ [Phys. Rev. Lett. 102 , 011801 (2009)]
journal, April 2011

Efficient, reliable and fast high-level triggering using a bonsai boosted decision tree
journal, February 2013

A brief introduction to PYTHIA 8.1
journal, June 2008

Handling of the generation of primary events in Gauss, the LHCb simulation framework
journal, December 2011

The EvtGen particle decay simulation package
journal, April 2001

PHOTOS Monte Carlo: a precision tool for QED correctionsin Z and W decays
journal, January 2006

Geant4 developments and applications
journal, February 2006

Geant4—a simulation toolkit
journal, July 2003

The LHCb Simulation Application, Gauss: Design, Evolution and Experience
journal, December 2011

Boosted decision trees as an alternative to artificial neural networks for particle identification
journal, May 2005

Mass distributions marginalized over per-event errors
journal, November 2014

Measurement of the polarization in the decay
journal, December 1994

Study of $B \to X γ$ decays and determination of $| V_{t d} / V_{t s} |$
journal, September 2010

: A statistical tool to unfold data distributions
journal, December 2005

Decay chain fitting with a Kalman filter
journal, November 2005

Measurement of the $Λ_{b}^{0}$ , $Ξ_{b}^{-}$ , and $Ω_{b}^{-}$ Baryon Masses
journal, May 2013

The Large-Sample Distribution of the Likelihood Ratio for Testing Composite Hypotheses
journal, March 1938

Heavy quark symmetry in isosinglet non-leptonic B-decays
journal, February 2005

Future sensitivity to new physics in $B_{d}$ , $B_{s}$ , and $K$ mixings
journal, February 2014

The use of Multiple Measurements in Taxonomic Problems
journal, September 1936

The dipion mass spectrum in e+e- annihilation and τ decay: a dynamical (ρ, ω, φ) mixing approach
journal, April 2008

Performance of the LHCb RICH detector at the LHC
journal, May 2013

The Physics of the B Factories
journal, November 2014

Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016
journal, December 2017

Measurement of CP observables in B±→D(∗)K± and B±→D(∗)π± decays
text, January 2017

Measurement of CP asymmetry in Bs0 → Ds∓K± decays
text, January 2018

LHCb detector performance
conference, October 2011

Review of Particle Physics
text, January 2018

Measurement of CP asymmetry in B s 0 → D s ∓ K± decays
journal, March 2018

Measurement of CP observables in B± → D(⁎)K± and B± → D(⁎)π± decays
text, January 2018

Review of Particle Physics
text, January 2012

Measurement of the CKM angle $\gamma$ from a combination of LHCb results
text, January 2016

The LHCb Detector at the LHC
text, January 2008

The Physics of the B Factories
text, January 2014

Measurement of CP observables in B±→D(⁎)K± and B±→D(⁎)π± decays
journal, February 2018

Measurement of the CKM angle γ using B± → DK± with D → KS0π+π−, KS0K+K− decays
text, January 2018

Branching Ratio Measurements of $B_s$ Decays
text, January 2012

The LHCb Trigger and its Performance in 2011
text, January 2012

Performance of the LHCb RICH detector at the LHC
text, January 2012

Measurement of the fragmentation fraction ratio $f_{s}/f_{d}$ and its dependence on $B$ meson kinematics
text, January 2013

LHCb Detector Performance
text, January 2014

Kernel Estimation in High-Energy Physics
text, January 2000

Heavy Quark Symmetry in Isosinglet Nonleptonic B-Decays
text, January 2004

Decay Chain Fitting with a Kalman Filter
text, January 2005

Decay $X (3872) \to π^{0} π^{+} π^{-}$ and $S$ -wave $D^{0} {\bar{D}}^{0} \to π^{+} π^{-}$ scattering length
journal, June 2019

Study of charmonium production in $${b} $$ b -hadron decays and first evidence for the decay $${{{B}} ^0_{{s}}} \!\rightarrow \phi \phi \phi $$ B s 0 → ϕ ϕ ϕ
journal, September 2017

Measurement of the $${\eta _{c}} (1S)$$ production cross-section in $$p $$ $$p $$ collisions at $$\sqrt{s} = 13$$ $$\, \text {TeV}$$
journal, March 2020

X(3872) as virtual companion pole of the charm–anticharm state χc1(2P)
journal, October 2019