Measurements of Direct CP-Violating Asymmetries in Charmless Decays of Bottom Baryons

Aaltonen, T.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. A.; Arisawa, T.; Artikov, A.; Asaadi, J.; Ashmanskas, W.; Auerbach, B.; Aurisano, A.; Azfar, F.; Badgett, W.; Bae, T.; Barbaro-Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Barria, P.; Bartos, P.; Bauce, M.; Bedeschi, F.; Behari, S.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Beretvas, A.; Bhatti, A.; Bland, K. R.; Blumenfeld, B.; Bocci, A.; Bodek, A.; Bortoletto, D.; Boudreau, J.; Boveia, A.; Brigliadori, L.; Bromberg, C.; Brucken, E.; Budagov, J.; Budd, H. S.; Burkett, K.; Busetto, G.; Bussey, P.; Butti, P.; Buzatu, A.; Calamba, A.; Camarda, S.; Campanelli, M.; Canelli, F.; Carls, B.; Carlsmith, D.; Carosi, R.; Carrillo, S.; Casal, B.; Casarsa, M.; Castro, A.; Catastini, P.; Cauz, D.; Cavaliere, V.; Cavalli-Sforza, M.; Cerri, A.; Cerrito, L.; Chen, Y. C.; Chertok, M.; Chiarelli, G.; Chlachidze, G.; Cho, K.; Chokheli, D.; Clark, A.; Clarke, C.; Convery, M. 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Y.; Happacher, F.; Hara, K.; Hare, M.; Harr, R. F.; Harrington-Taber, T.; Hatakeyama, K.; Hays, C.; Heinrich, J.; Herndon, M.; Hocker, A.; Hong, Z.; Hopkins, W.; Hou, S.; Hughes, R. E.; Husemann, U.; Hussein, M.; Huston, J.; Introzzi, G.; Iori, M.; Ivanov, A.; James, E.; Jang, D.; Jayatilaka, B.; Jeon, E. J.; Jindariani, S.; Jones, M.; Joo, K. K.; Jun, S. Y.; Junk, T. R.; Kambeitz, M.; Kamon, T.; Karchin, P. E.; Kasmi, A.; Kato, Y.; Ketchum, W.; Keung, J.; Kilminster, B.; Kim, D. H.; Kim, H. S.; Kim, J. E.; Kim, M. J.; Kim, S. H.; Kim, S. B.; Kim, Y. J.; Kim, Y. K.; Kimura, N.; Kirby, M.; Knoepfel, K.; Kondo, K.; Kong, D. J.; Konigsberg, J.; Kotwal, A. V.; Kreps, M.; Kroll, J.; Kruse, M.; Kuhr, T.; Kurata, M.; Laasanen, A. T.; Lammel, S.; Lancaster, M.; Lannon, K.; Latino, G.; Lee, H. S.; Lee, J. S.; Leo, S.; Leone, S.; Lewis, J. D.; Limosani, A.; Lipeles, E.; Lister, A.; Liu, H.; Liu, Q.; Liu, T.; Lockwitz, S.; Loginov, A.; Lucchesi, D.; Lucà, A.; Lueck, J.; Lujan, P.; Lukens, P.; Lungu, G.; Lys, J.; Lysak, R.; Madrak, R.; Maestro, P.; Malik, S.; Manca, G.; Manousakis-Katsikakis, A.; Marchese, L.; Margaroli, F.; Marino, P.; Martínez, M.; Matera, K.; Mattson, M. E.; Mazzacane, A.; Mazzanti, P.; McNulty, R.; Mehta, A.; Mehtala, P.; Mesropian, C.; Miao, T.; Mietlicki, D.; Mitra, A.; Miyake, H.; Moed, S.; Moggi, N.; Moon, C. S.; Moore, R.; Morello, M. J.; Mukherjee, A.; Muller, Th.; Murat, P.; Mussini, M.; Nachtman, J.; Nagai, Y.; Naganoma, J.; Nakano, I.; Napier, A.; Nett, J.; Neu, C.; Nigmanov, T.; Nodulman, L.; Noh, S. Y.; Norniella, O.; Oakes, L.; Oh, S. H.; Oh, Y. D.; Oksuzian, I.; Okusawa, T.; Orava, R.; Ortolan, L.; Pagliarone, C.; Palencia, E.; Palni, P.; Papadimitriou, V.; Parker, W.; Pauletta, G.; Paulini, M.; Paus, C.; Phillips, T. 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doi:10.1103/PhysRevLett.113.242001

Title: Measurements of Direct $C P$ -Violating Asymmetries in Charmless Decays of Bottom Baryons

Journal Article · Tue Dec 09 00:00:00 EST 2014 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.113.242001· OSTI ID:1151733

Aaltonen, T.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. A.; Arisawa, T.; Artikov, A.; Asaadi, J.; Ashmanskas, W.; Auerbach, B.; Aurisano, A.; Azfar, F.; Badgett, W.; Bae, T.; Barbaro-Galtieri, A.; Barnes, V. E.; Barnett, B. A. more »

Here, we report final measurements of direct CP-violating asymmetries in charmless decays of neutral bottom hadrons to pairs of charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using the complete √s = 1.96 TeV proton-antiproton collisions data set, corresponding to 9.3 fb^–1 of integrated luminosity, we measure A(Λ⁰_b → pπ^–) = +0.06 ± 0.07(stat) ± 0.03(syst) and A(Λ⁰_b → pK^–) = –0.10 ± 0.08(stat) ± 0.04(syst), compatible with no asymmetry. In addition we measure the CP-violating asymmetries in B⁰_s → K^–π⁺ and B⁰ → K⁺π^– decays to be A(B⁰_s → K^–π⁺) = +0.22 ± 0.07(stat) ± 0.02(syst) and A(B⁰ → K⁺π^–)=–0.083 ± 0.013(stat) ± 0.004(syst), respectively, which are significantly different from zero and consistent with current world averages.

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Research Organization:: Brookhaven National Lab. (BNL), Upton, NY (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: CDF Collaboration

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1151733

Alternate ID(s):: OSTI ID: 1180740

Report Number(s):: FERMILAB-PUB-14-055-E-PPD; arXiv:1403.5586; PRLTAO; 1286891

Journal Information:: Physical Review Letters, Vol. 113, Issue 24; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 24 works

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CP violation in the B system Gershon, T.; Gligorov, V. V. Reports on Progress in Physics, Vol. 80, Issue 4 https://doi.org/10.1088/1361-6633/aa5514	journal	February 2017
Nonleptonic beauty baryon decays and $C P$ asymmetries based on an $S U (3)$ -flavor analysis Roy, Shibasis; Sinha, Rahul; Deshpande, N. G. Physical Review D, Vol. 101, Issue 3 https://doi.org/10.1103/physrevd.101.036018	journal	February 2020
$C P$ -violating polarization asymmetry in charmless two-body decays of beauty baryons He, Min; He, Xiao-Gang; Li, Guan-Nan Physical Review D, Vol. 92, Issue 3 https://doi.org/10.1103/physrevd.92.036010	journal	August 2015
Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016 Amhis, Y.; Banerjee, Sw.; Ben-Haim, E. The European Physical Journal C, Vol. 77, Issue 12 https://doi.org/10.1140/epjc/s10052-017-5058-4	journal	December 2017
Weak decays of heavy hadrons into dynamically generated resonances Oset, Eulogio; Liang, Wei-Hong; Bayar, Melahat International Journal of Modern Physics E, Vol. 25, Issue 01 https://doi.org/10.1142/s0218301316300010	journal	January 2016
CP Violating Polarization Asymmetry in Charmless Two-Body Decays of Beauty Baryons He, Min; He, Xiao-Gang; Li, Guan-Nan arXiv https://doi.org/10.48550/arxiv.1507.07990	text	January 2015
Weak decays of heavy hadrons into dynamically generated resonances Oset, Eulogio; Liang, Wei-Hong; Bayar, Melahat arXiv https://doi.org/10.48550/arxiv.1601.03972	text	January 2016

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