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Title: Study of $${\mathrm{B}}_{\mathrm{s}}^0$$ → J/ψπ+πK+K decays

Abstract

The decays $${\mathrm{B}}_{\mathrm{s}}^0$$ → J/ψπ+πK+K are studied using a data set corresponding to an integrated luminosity of 9 fb–1, collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The decays $${\mathrm{B}}_{\mathrm{s}}^0$$ → $$\mathrm{J}/{ψ \mathrm{K}}^{\ast 0}{\overline{\mathrm{K}}}^{\ast 0}$$ and $${\mathrm{B}}_{\mathrm{s}}^0$$ → χc1(3872)K+K, where the K+Kpair does not originate from a Φ meson, are observed for the first time. Precise measurements of the ratios of branching fractions between intermediate χc1(3872)Φ, $$\mathrm{J}/{ψ \mathrm{K}}^{\ast 0}{\overline{\mathrm{K}}}^{\ast 0}$$, ψ(2S)Φ and χc1(3872)K+K states are reported. A structure, denoted as X(4740), is observed in the J/ψΦ mass spectrum and, assuming a Breit-Wigner parameterisation, its mass and width are determined to be $${\displaystyle \begin{array}{c}{m}_{\mathrm{X}(4740)}=4741\pm 6\pm 6\kern0.5em \mathrm{MeV}/{c}^2,\\ {}{\Gamma}_{\mathrm{X}(4740)}=53\pm 15\pm 11\kern0.5em \mathrm{MeV},\end{array}}$$ where the first uncertainty is statistical and the second is systematic. In addition, the most precise single measurement of the mass of the $${\mathrm{B}}_{\mathrm{s}}^0$$ meson is performed and gives a value of $${m}_{{\mathrm{B}}_{\mathrm{s}}^0}=5366.98\pm 0.07\pm 0.13\kern0.5em \mathrm{MeV}/{c}^2.$$

Authors:
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Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC). Nuclear Physics (NP)
Contributing Org.:
LHCb Collaboration
OSTI Identifier:
1879375
Report Number(s):
LA-UR-20-29021
Journal ID: ISSN 1029-8479; TRN: US2307637
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2021; Journal Issue: 2; Journal ID: ISSN 1029-8479
Publisher:
Springer Nature
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Atomic, Nuclear and Particle Physics; B physics; Branching fraction; Hadron-Hadron scattering (experiments); Quarkonium; Spectroscopy

Citation Formats

Aaij, R., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Aidala, C. A., Aiola, S., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Aliouche, Z., Alkhazov, G., Alvarez Cartelle, P., Amato, S., Amhis, Y., An, L., Anderlini, L., Andreianov, A., Andreotti, M., Archilli, F., Artamonov, A., Artuso, M., Arzymatov, K., Aslanides, E., Atzeni, M., Audurier, B., Bachmann, S., Bachmayer, M., Back, J. J., Baker, S., Baladron Rodriguez, P., Balagura, V., Baldini, W., Baptista Leite, J., Barlow, R. J., Barsuk, S., Barter, W., Bartolini, M., Baryshnikov, F., Basels, J. M., Bassi, G., Batsukh, B., Battig, A., Bay, A., Becker, M., Bedeschi, F., Bediaga, I., Beiter, A., Belavin, V., Belin, S., Bellee, V., Belous, K., Belov, I., Belyaev, I., Bencivenni, G., Ben-Haim, E., Berezhnoy, A., Bernet, R., Berninghoff, D., Bernstein, H. C., Bertella, C., Bertholet, E., Bertolin, A., Betancourt, C., Betti, F., Bettler, M. O., Bezshyiko, Ia, Bhasin, S., Bhom, J., Bian, L., Bieker, M. S., Bifani, S., Billoir, P., Birch, M., Bishop, F. R., Bizzeti, A., Bjørn, M., Blago, M. P., Blake, T., Blanc, F., Blusk, S., Bobulska, D., Boelhauve, J. A., Boente Garcia, O., Boettcher, T., Boldyrev, A., Bondar, A., Bondar, N., Borghi, S., Borisyak, M., Borsato, M., Borsuk, J. T., Bouchiba, S. A., Bowcock, T. V., Boyer, A., Bozzi, C., Bradley, M. J., Braun, S., Brea Rodriguez, A., Brodski, M., Brodzicka, J., Brossa Gonzalo, A., Brundu, D., Buonaura, A., Burr, C., Bursche, A., Butkevich, A., Butter, J. S., Buytaert, J., Byczynski, W., Cadeddu, S., Cai, H., Calabrese, R., Calefice, L., Calero Diaz, L., Cali, S., Calladine, R., Calvi, M., Calvo Gomez, M., Camargo Magalhaes, P., Camboni, A., Campana, P., Campora Perez, D. H., Campoverde Quezada, A. F., Capelli, S., Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carli, I., Carniti, P., Carus, L., Carvalho Akiba, K., Casais Vidal, A., Casse, G., Cattaneo, M., Cavallero, G., Celani, S., Cerasoli, J., Chadwick, A. J., Chapman, M. G., Charles, M., Charpentier, Ph, Chatzikonstantinidis, G., Chavez Barajas, C. A., Chefdeville, M., Chen, C., Chen, S., Chernov, A., Chitic, S. -G., Chobanova, V., Cholak, S., Chrzaszcz, M., Chubykin, A., Chulikov, V., Ciambrone, P., Cicala, M. F., Cid Vidal, X., Ciezarek, G., Clarke, P. L., Clemencic, M., Cliff, H. V., Closier, J., Cobbledick, J. L., Coco, V., Coelho, J. B., Cogan, J., Cogneras, E., Cojocariu, L., Collins, P., Colombo, T., Congedo, L., Contu, A., Cooke, N., Coombs, G., Corti, G., Costa Sobral, C. M., Couturier, B., Craik, D. C., Crkovská, J., Cruz Torres, M., Currie, R., Da Silva, C. L., Dall’Occo, E., Dalseno, J., D’Ambrosio, C., Danilina, A., d’Argent, P., Davis, A., De Aguiar Francisco, O., De Bruyn, K., De Capua, S., De Cian, M., De Miranda, J. M., De Paula, L., De Serio, M., De Simone, D., De Simone, P., de Vries, J. A., Dean, C. T., Dean, W., Decamp, D., Del Buono, L., Delaney, B., Dembinski, H. -P., Dendek, A., Denysenko, V., Derkach, D., Deschamps, O., Desse, F., Dettori, F., Dey, B., Di Nezza, P., Didenko, S., Dieste Maronas, L., Dijkstra, H., Dobishuk, V., Donohoe, A. M., Dordei, F., dos Reis, A. C., Douglas, L., Dovbnya, A., Downes, A. G., Dreimanis, K., Dudek, M. W., Dufour, L., Duk, V., Durante, P., Durham, J. M., Dutta, D., Dziewiecki, M., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Ek-In, S., Eklund, L., Ely, S., Ene, A., Epple, E., Escher, S., Eschle, J., Esen, S., Evans, T., Falabella, A., Fan, J., Fan, Y., Fang, B., Farley, N., Farry, S., Fazzini, D., Fedin, P., Féo, M., Fernandez Declara, P., Fernandez Prieto, A., Fernandez-tenllado Arribas, J. M., Ferrari, F., Ferreira Lopes, L., Ferreira Rodrigues, F., Ferreres Sole, S., Ferrillo, M., Ferro-Luzzi, M., Filippov, S., Fini, R. A., Fiorini, M., Firlej, M., Fischer, K. M., Fitzpatrick, C., Fiutowski, T., Fleuret, F., Fontana, M., Fontanelli, F., Forty, R., Franco Lima, V., Franco Sevilla, M., Frank, M., Franzoso, E., Frau, G., Frei, C., Friday, D. A., Fu, J., Fuehring, Q., Funk, W., Gabriel, E., Gaintseva, T., Gallas Torreira, A., Galli, D., Gambetta, S., Gan, Y., Gandelman, M., Gandini, P., Gao, Y., Garau, M., Garcia Martin, L. M., Garcia Moreno, P., García Pardiñas, J., Garcia Plana, B., Garcia Rosales, F. A., Garrido, L., Gaspar, C., Geertsema, R. E., Gerick, D., Gerken, L. L., Gersabeck, E., Gersabeck, M., Gershon, T., Gerstel, D., Ghez, Ph, Gibson, V., Giovannetti, M., Gioventù, A., Gironella Gironell, P., Giubega, L., Giugliano, C., Gizdov, K., Gkougkousis, E. L., Gligorov, V. V., Göbel, C., Golobardes, E., Golubkov, D., Golutvin, A., Gomes, A., Gomez Fernandez, S., Goncalves Abrantes, F., Goncerz, M., Gong, G., Gorbounov, P., Gorelov, I. V., Gotti, C., Govorkova, E., Grabowski, J. P., Graciani Diaz, R., Grammatico, T., Granado Cardoso, L. A., Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greeven, L. M., Griffith, P., Grillo, L., Gromov, S., Gruberg Cazon, B. R., Gu, C., Guarise, M., Günther, P. A., Gushchin, E., Guth, A., Guz, Y., Gys, T., Hadavizadeh, T., Haefeli, G., Haen, C., Haimberger, J., Halewood-leagas, T., Hamilton, P. M., Han, Q., Han, X., Hancock, T. H., Hansmann-Menzemer, S., Harnew, N., Harrison, T., Hasse, C., Hatch, M., He, J., Hecker, M., Heijhoff, K., Heinicke, K., Hennequin, A. M., Hennessy, K., Henry, L., Heuel, J., Hicheur, A., Hill, D., Hilton, M., Hollitt, S. E., Hu, J., Hu, J., Hu, W., Huang, W., Huang, X., Hulsbergen, W., Hunter, R. J., Hushchyn, M., Hutchcroft, D., Hynds, D., Ibis, P., Idzik, M., Ilin, D., Ilten, P., Inglessi, A., Ishteev, A., Ivshin, K., Jacobsson, R., Jakobsen, S., Jans, E., Jashal, B. K., Jawahery, A., Jevtic, V., Jezabek, M., Jiang, F., John, M., Johnson, D., Jones, C. R., Jones, T. P., Jost, B., Jurik, N., Kandybei, S., Kang, Y., Karacson, M., Kazeev, N., Keizer, F., Kenzie, M., Ketel, T., Khanji, B., Kharisova, A., Kholodenko, S., Kim, K. E., Kirn, T., Kirsebom, V. S., Kitouni, O., Klaver, S., Klimaszewski, K., Koliiev, S., Kondybayeva, A., Konoplyannikov, A., Kopciewicz, P., Kopecna, R., Koppenburg, P., Korolev, M., Kostiuk, I., Kot, O., Kotriakhova, S., Kravchenko, P., Kravchuk, L., Krawczyk, R. D., Kreps, M., Kress, F., Kretzschmar, S., Krokovny, P., Krupa, W., Krzemien, W., Kucewicz, W., Kucharczyk, M., Kudryavtsev, V., Kuindersma, H. S., Kunde, G. J., Kvaratskheliya, T., Lacarrere, D., Lafferty, G., Lai, A., Lampis, A., Lancierini, D., Lane, J. J., Lane, R., Lanfranchi, G., Langenbruch, C., Langer, J., Lantwin, O., Latham, T., Lazzari, F., Le Gac, R., Lee, S. H., Lefèvre, R., Leflat, A., Legotin, S., Leroy, O., Lesiak, T., Leverington, B., Li, H., Li, L., Li, P., Li, X., Li, Y., Li, Y., Li, Z., Liang, X., Lin, T., Lindner, R., Lisovskyi, V., Litvinov, R., Liu, G., Liu, H., Liu, S., Liu, X., Loi, A., Lomba Castro, J., Longstaff, I., Lopes, J. H., Loustau, G., Lovell, G. 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Aaij, R., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Aidala, C. A., Aiola, S., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Aliouche, Z., Alkhazov, G., Alvarez Cartelle, P., Amato, S., Amhis, Y., An, L., Anderlini, L., Andreianov, A., Andreotti, M., Archilli, F., Artamonov, A., Artuso, M., Arzymatov, K., Aslanides, E., Atzeni, M., Audurier, B., Bachmann, S., Bachmayer, M., Back, J. J., Baker, S., Baladron Rodriguez, P., Balagura, V., Baldini, W., Baptista Leite, J., Barlow, R. J., Barsuk, S., Barter, W., Bartolini, M., Baryshnikov, F., Basels, J. M., Bassi, G., Batsukh, B., Battig, A., Bay, A., Becker, M., Bedeschi, F., Bediaga, I., Beiter, A., Belavin, V., Belin, S., Bellee, V., Belous, K., Belov, I., Belyaev, I., Bencivenni, G., Ben-Haim, E., Berezhnoy, A., Bernet, R., Berninghoff, D., Bernstein, H. C., Bertella, C., Bertholet, E., Bertolin, A., Betancourt, C., Betti, F., Bettler, M. 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M., Dutta, D., Dziewiecki, M., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, S., Eisenhardt, S., Ek-In, S., Eklund, L., Ely, S., Ene, A., Epple, E., Escher, S., Eschle, J., Esen, S., Evans, T., Falabella, A., Fan, J., Fan, Y., Fang, B., Farley, N., Farry, S., Fazzini, D., Fedin, P., Féo, M., Fernandez Declara, P., Fernandez Prieto, A., Fernandez-tenllado Arribas, J. M., Ferrari, F., Ferreira Lopes, L., Ferreira Rodrigues, F., Ferreres Sole, S., Ferrillo, M., Ferro-Luzzi, M., Filippov, S., Fini, R. A., Fiorini, M., Firlej, M., Fischer, K. M., Fitzpatrick, C., Fiutowski, T., Fleuret, F., Fontana, M., Fontanelli, F., Forty, R., Franco Lima, V., Franco Sevilla, M., Frank, M., Franzoso, E., Frau, G., Frei, C., Friday, D. A., Fu, J., Fuehring, Q., Funk, W., Gabriel, E., Gaintseva, T., Gallas Torreira, A., Galli, D., Gambetta, S., Gan, Y., Gandelman, M., Gandini, P., Gao, Y., Garau, M., Garcia Martin, L. M., Garcia Moreno, P., García Pardiñas, J., Garcia Plana, B., Garcia Rosales, F. A., Garrido, L., Gaspar, C., Geertsema, R. E., Gerick, D., Gerken, L. L., Gersabeck, E., Gersabeck, M., Gershon, T., Gerstel, D., Ghez, Ph, Gibson, V., Giovannetti, M., Gioventù, A., Gironella Gironell, P., Giubega, L., Giugliano, C., Gizdov, K., Gkougkousis, E. L., Gligorov, V. V., Göbel, C., Golobardes, E., Golubkov, D., Golutvin, A., Gomes, A., Gomez Fernandez, S., Goncalves Abrantes, F., Goncerz, M., Gong, G., Gorbounov, P., Gorelov, I. V., Gotti, C., Govorkova, E., Grabowski, J. P., Graciani Diaz, R., Grammatico, T., Granado Cardoso, L. A., Graugés, E., Graverini, E., Graziani, G., Grecu, A., Greeven, L. M., Griffith, P., Grillo, L., Gromov, S., Gruberg Cazon, B. R., Gu, C., Guarise, M., Günther, P. A., Gushchin, E., Guth, A., Guz, Y., Gys, T., Hadavizadeh, T., Haefeli, G., Haen, C., Haimberger, J., Halewood-leagas, T., Hamilton, P. M., Han, Q., Han, X., Hancock, T. 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@article{osti_1879375,
title = {Study of ${\mathrm{B}}_{\mathrm{s}}^0$ → J/ψπ+π–K+K– decays},
author = {Aaij, R. and Abellán Beteta, C. and Ackernley, T. and Adeva, B. and Adinolfi, M. and Afsharnia, H. and Aidala, C. A. and Aiola, S. and Ajaltouni, Z. and Akar, S. and Albrecht, J. and Alessio, F. and Alexander, M. and Alfonso Albero, A. and Aliouche, Z. and Alkhazov, G. and Alvarez Cartelle, P. and Amato, S. and Amhis, Y. and An, L. and Anderlini, L. and Andreianov, A. and Andreotti, M. and Archilli, F. and Artamonov, A. and Artuso, M. and Arzymatov, K. and Aslanides, E. and Atzeni, M. and Audurier, B. and Bachmann, S. and Bachmayer, M. and Back, J. J. and Baker, S. and Baladron Rodriguez, P. and Balagura, V. and Baldini, W. and Baptista Leite, J. and Barlow, R. J. and Barsuk, S. and Barter, W. and Bartolini, M. and Baryshnikov, F. and Basels, J. M. and Bassi, G. and Batsukh, B. and Battig, A. and Bay, A. and Becker, M. and Bedeschi, F. and Bediaga, I. and Beiter, A. and Belavin, V. and Belin, S. and Bellee, V. and Belous, K. and Belov, I. and Belyaev, I. and Bencivenni, G. and Ben-Haim, E. and Berezhnoy, A. and Bernet, R. and Berninghoff, D. and Bernstein, H. C. and Bertella, C. and Bertholet, E. and Bertolin, A. and Betancourt, C. and Betti, F. and Bettler, M. O. and Bezshyiko, Ia and Bhasin, S. and Bhom, J. and Bian, L. and Bieker, M. S. and Bifani, S. and Billoir, P. and Birch, M. and Bishop, F. R. and Bizzeti, A. and Bjørn, M. and Blago, M. P. and Blake, T. and Blanc, F. and Blusk, S. and Bobulska, D. and Boelhauve, J. A. and Boente Garcia, O. and Boettcher, T. and Boldyrev, A. and Bondar, A. and Bondar, N. and Borghi, S. and Borisyak, M. and Borsato, M. and Borsuk, J. T. and Bouchiba, S. A. and Bowcock, T. V. and Boyer, A. and Bozzi, C. and Bradley, M. J. and Braun, S. and Brea Rodriguez, A. and Brodski, M. and Brodzicka, J. and Brossa Gonzalo, A. and Brundu, D. and Buonaura, A. and Burr, C. and Bursche, A. and Butkevich, A. and Butter, J. S. and Buytaert, J. and Byczynski, W. and Cadeddu, S. and Cai, H. and Calabrese, R. and Calefice, L. and Calero Diaz, L. and Cali, S. and Calladine, R. and Calvi, M. and Calvo Gomez, M. and Camargo Magalhaes, P. and Camboni, A. and Campana, P. and Campora Perez, D. H. and Campoverde Quezada, A. F. and Capelli, S. and Capriotti, L. and Carbone, A. and Carboni, G. and Cardinale, R. and Cardini, A. and Carli, I. and Carniti, P. and Carus, L. and Carvalho Akiba, K. and Casais Vidal, A. and Casse, G. and Cattaneo, M. and Cavallero, G. and Celani, S. and Cerasoli, J. and Chadwick, A. J. and Chapman, M. G. and Charles, M. and Charpentier, Ph and Chatzikonstantinidis, G. and Chavez Barajas, C. A. and Chefdeville, M. and Chen, C. and Chen, S. and Chernov, A. and Chitic, S. -G. and Chobanova, V. and Cholak, S. and Chrzaszcz, M. and Chubykin, A. and Chulikov, V. and Ciambrone, P. and Cicala, M. F. and Cid Vidal, X. and Ciezarek, G. and Clarke, P. L. and Clemencic, M. and Cliff, H. V. and Closier, J. and Cobbledick, J. L. and Coco, V. and Coelho, J. B. and Cogan, J. and Cogneras, E. and Cojocariu, L. and Collins, P. and Colombo, T. and Congedo, L. and Contu, A. and Cooke, N. and Coombs, G. and Corti, G. and Costa Sobral, C. M. and Couturier, B. and Craik, D. C. and Crkovská, J. and Cruz Torres, M. and Currie, R. and Da Silva, C. L. and Dall’Occo, E. and Dalseno, J. and D’Ambrosio, C. and Danilina, A. and d’Argent, P. 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 Serio, M. and De Simone, D. and De Simone, P. and de Vries, J. A. and Dean, C. T. and Dean, W. and Decamp, D. and Del Buono, L. and Delaney, B. and Dembinski, H. -P. and Dendek, A. and Denysenko, V. and Derkach, D. and Deschamps, O. and Desse, F. and Dettori, F. and Dey, B. and Di Nezza, P. and Didenko, S. and Dieste Maronas, L. and Dijkstra, H. and Dobishuk, V. and Donohoe, A. M. and Dordei, F. and dos Reis, A. C. and Douglas, L. and Dovbnya, A. and Downes, A. G. and Dreimanis, K. and Dudek, M. W. and Dufour, L. and Duk, V. and Durante, P. and Durham, J. M. and Dutta, D. and Dziewiecki, M. and Dziurda, A. and Dzyuba, A. and Easo, S. and Egede, U. and Egorychev, V. and Eidelman, S. and Eisenhardt, S. and Ek-In, S. and Eklund, L. and Ely, S. and Ene, A. and Epple, E. and Escher, S. and Eschle, J. and Esen, S. and Evans, T. and Falabella, A. and Fan, J. and Fan, Y. and Fang, B. and Farley, N. and Farry, S. and Fazzini, D. and Fedin, P. and Féo, M. and Fernandez Declara, P. and Fernandez Prieto, A. and Fernandez-tenllado Arribas, J. M. and Ferrari, F. and Ferreira Lopes, L. and Ferreira Rodrigues, F. and Ferreres Sole, S. and Ferrillo, M. and Ferro-Luzzi, M. and Filippov, S. and Fini, R. A. and Fiorini, M. and Firlej, M. and Fischer, K. M. and Fitzpatrick, C. and Fiutowski, T. and Fleuret, F. and Fontana, M. and Fontanelli, F. and Forty, R. and Franco Lima, V. and Franco Sevilla, M. and Frank, M. and Franzoso, E. and Frau, G. and Frei, C. and Friday, D. A. and Fu, J. and Fuehring, Q. and Funk, W. and Gabriel, E. and Gaintseva, T. and Gallas Torreira, A. and Galli, D. and Gambetta, S. and Gan, Y. and Gandelman, M. and Gandini, P. and Gao, Y. and Garau, M. and Garcia Martin, L. M. and Garcia Moreno, P. and García Pardiñas, J. and Garcia Plana, B. and Garcia Rosales, F. A. and Garrido, L. and Gaspar, C. and Geertsema, R. E. and Gerick, D. and Gerken, L. L. and Gersabeck, E. and Gersabeck, M. and Gershon, T. and Gerstel, D. and Ghez, Ph and Gibson, V. and Giovannetti, M. and Gioventù, A. and Gironella Gironell, P. and Giubega, L. and Giugliano, C. and Gizdov, K. and Gkougkousis, E. L. and Gligorov, V. V. and Göbel, C. and Golobardes, E. and Golubkov, D. and Golutvin, A. and Gomes, A. and Gomez Fernandez, S. and Goncalves Abrantes, F. and Goncerz, M. and Gong, G. and Gorbounov, P. and Gorelov, I. V. and Gotti, C. and Govorkova, E. and Grabowski, J. P. and Graciani Diaz, R. and Grammatico, T. and Granado Cardoso, L. A. and Graugés, E. and Graverini, E. and Graziani, G. and Grecu, A. and Greeven, L. M. and Griffith, P. and Grillo, L. and Gromov, S. and Gruberg Cazon, B. R. and Gu, C. and Guarise, M. and Günther, P. A. and Gushchin, E. and Guth, A. and Guz, Y. and Gys, T. and Hadavizadeh, T. and Haefeli, G. and Haen, C. and Haimberger, J. and Halewood-leagas, T. and Hamilton, P. M. and Han, Q. and Han, X. and Hancock, T. 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abstractNote = {The decays ${\mathrm{B}}_{\mathrm{s}}^0$ → J/ψπ+π–K+K– are studied using a data set corresponding to an integrated luminosity of 9 fb–1, collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The decays ${\mathrm{B}}_{\mathrm{s}}^0$ → $\mathrm{J}/{ψ \mathrm{K}}^{\ast 0}{\overline{\mathrm{K}}}^{\ast 0}$ and ${\mathrm{B}}_{\mathrm{s}}^0$ → χc1(3872)K+K–, where the K+K–pair does not originate from a Φ meson, are observed for the first time. Precise measurements of the ratios of branching fractions between intermediate χc1(3872)Φ, $\mathrm{J}/{ψ \mathrm{K}}^{\ast 0}{\overline{\mathrm{K}}}^{\ast 0}$, ψ(2S)Φ and χc1(3872)K+K– states are reported. A structure, denoted as X(4740), is observed in the J/ψΦ mass spectrum and, assuming a Breit-Wigner parameterisation, its mass and width are determined to be ${\displaystyle \begin{array}{c}{m}_{\mathrm{X}(4740)}=4741\pm 6\pm 6\kern0.5em \mathrm{MeV}/{c}^2,\\ {}{\Gamma}_{\mathrm{X}(4740)}=53\pm 15\pm 11\kern0.5em \mathrm{MeV},\end{array}}$ where the first uncertainty is statistical and the second is systematic. In addition, the most precise single measurement of the mass of the ${\mathrm{B}}_{\mathrm{s}}^0$ meson is performed and gives a value of ${m}_{{\mathrm{B}}_{\mathrm{s}}^0}=5366.98\pm 0.07\pm 0.13\kern0.5em \mathrm{MeV}/{c}^2.$},
doi = {10.1007/jhep02(2021)024},
journal = {Journal of High Energy Physics (Online)},
number = 2,
volume = 2021,
place = {United States},
year = {Tue Feb 02 00:00:00 EST 2021},
month = {Tue Feb 02 00:00:00 EST 2021}
}

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