Measurement of branching fractions and direct CP asymmetries for B →Kπ and B →ππ decays at Belle II

I. Adachi, L. Aggarwal, H. Ahmed, H. Aihara, N. Akopov, A. Aloisio, N. Anh Ky, D. M. Asner, H. Atmacan, T. Aushev, V. Aushev, M. Aversano, V. Babu, H. Bae, S. Bahinipati, P. Bambade, Sw Banerjee, S. Bansal, M. Barrett, J. BaudotM. Bauer, A. Baur, A. Beaubien, F. Becherer, J. Becker, P. K. Behera, J. V. Bennett, F. U. Bernlochner, V. Bertacchi, M. Bertemes, E. Bertholet, M. Bessner, S. Bettarini, B. Bhuyan, F. Bianchi, T. Bilka, D. Biswas, A. Bobrov, D. Bodrov, A. Bolz, A. Bondar, J. Borah, A. Bozek, M. Bračko, P. Branchini, R. A. Briere, T. E. Browder, A. Budano, S. Bussino, M. Campajola, L. Cao, G. Casarosa, C. Cecchi, J. Cerasoli, M. C. Chang, P. Chang, R. Cheaib, P. Cheema, V. Chekelian, C. Chen, B. G. Cheon, K. Chilikin, K. Chirapatpimol, H. E. Cho, K. Cho, S. J. Cho, S. K. Choi, S. Choudhury, J. Cochran, L. Corona, L. M. Cremaldi, S. Das, F. Dattola, E. De La Cruz-Burelo, S. A. De La Motte, G. De Nardo, M. De Nuccio, G. De Pietro, R. De Sangro, M. Destefanis, S. Dey, A. De Yta-Hernandez, R. Dhamija, A. Di Canto, F. Di Capua, J. Dingfelder, Z. DoleŽal, I. Domínguez Jiménez, T. V. Dong, M. Dorigo, K. Dort, D. Dossett, S. Dreyer, S. Dubey, G. Dujany, P. Ecker, M. Eliachevitch, D. Epifanov, P. Feichtinger, T. Ferber, D. Ferlewicz, T. Fillinger, C. Finck, G. Finocchiaro, A. Fodor, F. Forti, A. Frey, B. G. Fulsom, A. Gabrielli, E. Ganiev, M. Garcia-Hernandez, R. Garg, A. Garmash, G. Gaudino, V. Gaur, A. Gaz, A. Gellrich, G. Ghevondyan, D. Ghosh, H. Ghumaryan, G. Giakoustidis, R. Giordano, A. Giri, A. Glazov, B. Gobbo, R. Godang, O. Gogota, P. Goldenzweig, P. Grace, W. Gradl, T. Grammatico, S. Granderath, E. Graziani, D. Greenwald, Z. Gruberová, T. Gu, Y. Guan, K. Gudkova, S. Halder, Y. Han, T. Hara, K. Hayasaka, H. Hayashii, S. Hazra, C. Hearty, M. T. Hedges, A. Heidelbach, I. Heredia De La Cruz, M. Hernández Villanueva, A. Hershenhorn, T. Higuchi, E. C. Hill, M. Hoek, M. Hohmann, P. Horak, C. L. Hsu, T. Humair, T. Iijima, K. Inami, N. Ipsita, A. Ishikawa, S. Ito, R. Itoh, M. Iwasaki, P. Jackson, W. W. Jacobs, D. E. Jaffe, E. J. Jang, Q. P. Ji, S. Jia, Y. Jin, A. Johnson, K. K. Joo, H. Junkerkalefeld, D. Kalita, A. B. Kaliyar, J. Kandra, K. H. Kang, S. Kang, G. Karyan, T. Kawasaki, F. Keil, C. Ketter, C. Kiesling, C. H. Kim, D. Y. Kim, K. H. Kim, Y. K. Kim, H. Kindo, K. Kinoshita, P. Kodyš, T. Koga, S. Kohani, K. Kojima, T. Konno, A. Korobov, S. Korpar, E. Kovalenko, R. Kowalewski, T. M.G. Kraetzschmar, P. KriŽan, P. Krokovny, Y. Kulii, T. Kuhr, M. Kumar, R. Kumar, K. Kumara, T. Kunigo, A. Kuzmin, Y. J. Kwon, S. Lacaprara, Y. T. Lai, T. Lam, L. Lanceri, J. S. Lange, M. Laurenza, R. Leboucher, F. R. Le Diberder, P. Leitl, D. Levit, P. M. Lewis, C. Li, L. K. Li, Y. Li, J. Libby, S. Lin, Q. Y. Liu, Z. Q. Liu, D. Liventsev, S. Longo, T. Lueck, C. Lyu, Y. Ma, M. Maggiora, S. P. Maharana, R. Maiti, S. Maity, G. Mancinelli, R. Manfredi, E. Manoni, M. Mantovano, D. Marcantonio, S. Marcello, C. Marinas, L. Martel, C. Martellini, A. Martini, T. Martinov, L. Massaccesi, M. Masuda, T. Matsuda, K. Matsuoka, D. Matvienko, S. K. Maurya, J. A. Mckenna, R. Mehta, F. Meier, M. Merola, F. Metzner, M. Milesi, C. Miller, M. Mirra, K. Miyabayashi, R. Mizuk, G. B. Mohanty, N. Molina-Gonzalez, S. Mondal, S. Moneta, H. G. Moser, M. Mrvar, R. Mussa, I. Nakamura, M. Nakao, Y. Nakazawa, A. Narimani Charan, M. Naruki, Z. Natkaniec, A. Natochii, L. Nayak, M. Nayak, G. Nazaryan, N. K. Nisar, S. Nishida, S. Ogawa, H. Ono, Y. Onuki, P. Oskin, F. Otani, P. Pakhlov, G. Pakhlova, A. Paladino, A. Panta, E. Paoloni, S. Pardi, K. Parham, H. Park, S. H. Park, B. Paschen, A. Passeri, S. Patra, S. Paul, T. K. Pedlar, I. Peruzzi, R. Peschke, R. Pestotnik, F. Pham, M. Piccolo, L. E. Piilonen, P. L.M. Podesta-Lerma, T. Podobnik, S. Pokharel, C. Praz, S. Prell, E. Prencipe, M. T. Prim, H. Purwar, N. Rad, P. Rados, G. Raeuber, S. Raiz, M. Reif, S. Reiter, M. Remnev, I. Ripp-Baudot, G. Rizzo, S. H. Robertson, M. Roehrken, J. M. Roney, A. Rostomyan, N. Rout, G. Russo, D. Sahoo, S. Sandilya, A. Sangal, L. Santelj, Y. Sato, V. Savinov, B. Scavino, C. Schmitt, C. Schwanda, A. J. Schwartz, Y. Seino, A. Selce, K. Senyo, J. Serrano, M. E. Sevior, C. Sfienti, W. Shan, C. Sharma, X. D. Shi, T. Shillington, J. G. Shiu, D. Shtol, A. Sibidanov, F. Simon, J. B. Singh, J. Skorupa, R. J. Sobie, M. Sobotzik, A. Soffer, A. Sokolov, E. Solovieva, S. Spataro, B. Spruck, M. Starič, P. Stavroulakis, S. Stefkova, Z. S. Stottler, R. Stroili, J. Strube, M. Sumihama, K. Sumisawa, W. Sutcliffe, H. Svidras, M. Takahashi, M. Takizawa, U. Tamponi, K. Tanida, H. Tanigawa, F. Tenchini, A. Thaller, O. Tittel, R. Tiwary, D. Tonelli, E. Torassa, N. Toutounji, K. Trabelsi, I. Tsaklidis, M. Uchida, I. Ueda, Y. Uematsu, T. Uglov, K. Unger, Y. Unno, K. Uno, S. Uno, P. Urquijo, Y. Ushiroda, S. E. Vahsen, R. Van Tonder, G. S. Varner, K. E. Varvell, M. Veronesi, V. S. Vismaya, L. Vitale, V. Vobbilisetti, R. Volpe, B. Wach, M. Wakai, H. M. Wakeling, S. Wallner, E. Wang, M. Z. Wang, Z. Wang, A. Warburton, M. Watanabe, S. Watanuki, M. Welsch, C. Wessel, E. Won, X. P. Xu, B. D. Yabsley, S. Yamada, W. Yan, S. B. Yang, J. Yelton, J. H. Yin, K. Yoshihara, C. Z. Yuan, Y. Yusa, L. Zani, Y. Zhang, V. Zhilich, J. S. Zhou, Q. D. Zhou, V. I. Zhukova, R. Žlebčík

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Abstract

We report measurements of the branching fractions and direct CP asymmetries of the decays B0→K+π-, B+→K+π0, B+→K0π+, and B0→K0π0, and use these for testing the standard model through an isospin-based sum rule. In addition, we measure the branching fraction and direct CP asymmetry of the decay B+→π+π0 and the branching fraction of the decay B0→π+π-. The data are collected with the belle II detector from e+e- collisions at the (4S) resonance produced by the SuperKEKB asymmetric-energy collider and contain 387×106 bottom-antibottom meson pairs. Signal yields are determined in two-dimensional fits to background-discriminating variables, and range from 500 to 3900 decays, depending on the channel. We obtain -0.03±0.13±0.04 for the sum rule in agreement with the standard model expectation of zero and with a precision comparable to the best existing determinations.

Original languageEnglish
Article number012001
JournalPhysical Review D
Volume109
Issue number1
DOIs
StatePublished - 1 Jan 2024

Funding

FundersFunder number
GLORIAD
Generalitat Valenciana, SpainCIDEGENT/2018/020
Horizon 2020 ERC-Advanced267104, 884719
Horizon 2020 ERC-Consolidator819127
Horizon 2020 Marie Sklodowska-Curie700525, 822070, 101026516
Israel Ministry of Science3-16543
National Natural Science Foundation of China and Research12175041, 12135005, 11761141009, 11975076, 11575017, 12150004, 12161141008, 11705209
SEP-CINVESTAV237
Science Committee of the Republic of Armenia20TTCG-1C010
Seventh FrameworkPIEF-GA-2013-622527
Slovenian Research Agency and ResearchJ1-9124, P1-0135
TUBITAK ULAKBIM
U.S. Department of Energy and ResearchDE-SC0010007, DE-AC06-76RLO1830, DE-SC0010118, DE-SC0010504, DE-SC0012704, DE-SC0010073, DE-SC0011784, DE-SC0021274, DE-SC0022350, DE-SC0019230, DE-SC0023470, DE-SC0009824, DE-SC0007983, DE-SC0009973
UPES SEEDD-SOE/20062022/06, D-SEED-INFRA/17052023/01
University of Tabuk ResearchS-0256-1438, S-0280-1439
National Science FoundationPHY-2111604, PHY-1913789
National Science Foundation
Alexander von Humboldt-Stiftung
Canarie
Horizon 2020 Framework Programme947006
Horizon 2020 Framework Programme
Vietnam Academy of Science and TechnologyDL0000.05/21-23
Vietnam Academy of Science and Technology
Thailand Center of Excellence in Physics
Compute Canada
National Research Foundation of Ukraine2020.02/0257
National Research Foundation of Ukraine
Natural Sciences and Engineering Research Council of Canada
European Research Council
Australian Research CouncilDP210101900, DP210102831, DE220100462, DP200101792, LE210100098, LE230100085
Australian Research Council
Department of Science and Technology, Ministry of Science and Technology, India
Department of Atomic Energy, Government of IndiaRTI 4002
Department of Atomic Energy, Government of India
Helmholtz-Gemeinschaft
Deutsche Forschungsgemeinschaft
Agence Nationale de la RechercheANR-21-CE31-0009
Agence Nationale de la Recherche
Japan Society for the Promotion of Science16H06492, 18H05226, 18K03621, 26400255, 22H00144, 19H00682, 26220706, 17H01133, 22K21347, 16K05323, 16H03993, 16H03968, 17H05405, 23H05433, 22K14056, 18H03710
Japan Society for the Promotion of Science
Ministry of Education, Culture, Sports, Science and Technology
United States-Israel Binational Science Foundation2016113
United States-Israel Binational Science Foundation
Grantová Agentura České Republiky22-18469S
Grantová Agentura České Republiky
Bundesministerium für Bildung und Forschung
Austrian Science FundP 31361-N36
Austrian Science Fund
Ministry of Education
Ministry of Higher Education, MalaysiaFOINS-296, CB-180023, CB-236394, CB-254409, CB-221329
Ministry of Higher Education, Malaysia
Ministry of Education and Science of the Russian Federation
Korea Institute of Science and Technology Information
National Research Foundation of Korea2022R1A2C1003993, 2016R1D1A1B02012900, 2018R1A2B3003643, 2021R1A6A1A03043957, 2021R1F1A1064008, RS-2022-00197659, 2019R1I1A3A01058933, 2021R1F1A1060423, 2018R1A6A1A06024970
National Research Foundation of Korea
Israel Science Foundation2476/17
Israel Science Foundation
Instituto Nazionale di Fisica Nucleare
Max-Planck-Gesellschaft
Narodowe Centrum Nauki
Universiti Malaya
Ministerstwo Edukacji i Nauki
Centre National de la Recherche Scientifique
Akademi Sains Malaysia
Natural Science Foundation of Shandong ProvinceZR2022JQ02
Natural Science Foundation of Shandong Province
National Research University Higher School of Economics
Ministry of Education and Science of Ukraine
Agencia Estatal de InvestigaciónRYC2020-029875-I
Agencia Estatal de Investigación
National Key Research and Development Program of China2022YFA1601903
National Key Research and Development Program of China
National Institute of Informatics
Institut National de Physique Nucléaire et de Physique des Particules
Bundesministerium für Bildung, Wissenschaft und Forschung
National Science and Technology Council
Korea Research Environment Open Network

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