Novel method for the identification of the production flavor of neutral charmed mesons

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, M. Barrett, J. Baudot, M. BauerA. Baur, A. Beaubien, 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, B. G. Cheon, K. Chilikin, K. Chirapatpimol, H. E. Cho, K. Cho, S. J. Cho, S. K. Choi, S. Choudhury, 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, 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, S. Dreyer, S. Dubey, G. Dujany, P. Ecker, M. Eliachevitch, 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, G. Gaudino, V. Gaur, A. Gaz, A. Gellrich, G. Ghevondyan, D. Ghosh, G. Giakoustidis, R. Giordano, A. Giri, B. Gobbo, R. Godang, P. Goldenzweig, 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, I. Heredia De La Cruz, M. Hernández Villanueva, A. Hershenhorn, T. Higuchi, E. C. Hill, M. Hoek, M. Hohmann, C. L. Hsu, T. Iijima, K. Inami, G. Inguglia, 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, H. Kakuno, 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, K. Kinoshita, P. Kodyš, T. Koga, S. Kohani, A. Korobov, S. Korpar, E. Kovalenko, R. Kowalewski, T. M.G. Kraetzschmar, P. KriŽan, P. Krokovny, M. Kumar, K. Kumara, T. Kunigo, A. Kuzmin, Y. J. Kwon, S. Lacaprara, Y. T. Lai, T. Lam, J. S. Lange, M. Laurenza, K. Lautenbach, R. Leboucher, F. R. Le Diberder, P. Leitl, D. Levit, C. Li, L. K. Li, J. Libby, Q. Y. Liu, Z. Q. Liu, S. Longo, A. Lozar, T. Lueck, C. Lyu, Y. Ma, M. Maggiora, R. Maiti, S. Maity, G. Mancinelli, R. Manfredi, E. Manoni, A. C. Manthei, M. Mantovano, D. Marcantonio, S. Marcello, C. Marinas, L. Martel, C. Martellini, A. Martini, T. Martinov, L. Massaccesi, M. Masuda, 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, R. Mussa, I. Nakamura, Y. Nakazawa, A. Narimani Charan, M. Naruki, Z. Natkaniec, A. Natochii, L. Nayak, M. Nayak, G. Nazaryan, M. Niiyama, N. K. Nisar, S. Nishida, S. Ogawa, H. Ono, Y. Onuki, P. Oskin, E. R. Oxford, P. Pakhlov, G. Pakhlova, A. Paladino, A. Panta, E. Paoloni, S. Pardi, K. Parham, H. Park, S. H. Park, B. Paschen, S. Patra, S. Paul, T. K. Pedlar, R. Peschke, R. Pestotnik, M. Piccolo, L. E. Piilonen, P. L.M. Podesta-Lerma, T. Podobnik, S. Pokharel, L. Polat, C. Praz, S. Prell, E. Prencipe, M. T. Prim, H. Purwar, N. Rad, P. Rados, G. Raeuber, S. Raiz, M. Reif, S. Reiter, I. Ripp-Baudot, G. Rizzo, L. B. Rizzuto, S. H. Robertson, M. Roehrken, J. M. Roney, A. Rostomyan, N. Rout, D. A. Sanders, S. Sandilya, A. Sangal, L. Santelj, Y. Sato, V. Savinov, B. Scavino, M. Schnepf, C. Schwanda, 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, S. Stefkova, Z. S. Stottler, R. Stroili, M. Sumihama, W. Sutcliffe, H. Svidras, M. Takahashi, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, A. Thaller, O. Tittel, R. Tiwary, D. Tonelli, E. Torassa, K. Trabelsi, I. Tsaklidis, M. Uchida, I. Ueda, 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, A. Vinokurova, V. S. Vismaya, L. Vitale, V. Vobbilisetti, B. Wach, M. Wakai, H. M. Wakeling, S. Wallner, E. Wang, M. Z. Wang, X. L. 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. H. Yin, Y. M. Yook, K. Yoshihara, C. Z. Yuan, Y. Yusa, L. Zani, V. Zhilich, J. S. Zhou, Q. D. Zhou, V. I. Zhukova

Research output: Contribution to journalArticlepeer-review

Abstract

We propose a new algorithm for the identification of the production flavor of neutral D mesons in the Belle II experiment. The algorithm exploits the correlation between the flavor of a reconstructed neutral D meson (signal D meson) and the electric charges of particles reconstructed in the rest of the e+e-→cc¯ event. These include those originating from the decay of the other charm hadron produced in the event, as well as those possibly produced in association with the signal D meson. We develop the algorithm using simulation and calibrate it in data using decay modes that identify the flavor of the decaying neutral D meson. We use a data sample of e+e- collisions, corresponding to 362 fb-1 of integrated luminosity, collected by Belle II at center-of-mass energies near the γ(4S) mass. The effective tagging efficiency in data is (47.91±0.07(stat)±0.51(syst))%, independent of the neutral-D-meson decay mode. This charm flavor tagger will approximately double the effective sample size of many CP-violation and charm-mixing measurements that so far have exclusively relied on neutral D mesons originating from D∗± decays. While developed for Belle II, the basic principles underlying the charm flavor tagger can be used in other experiments, including those at hadron colliders.

Original languageEnglish
Article number112010
JournalPhysical Review D
Volume107
Issue number11
DOIs
StatePublished - 1 Jun 2023

Funding

FundersFunder number
Ministry of Education
Narodowe Centrum Nauki
Institut National de Physique Nucléaire et de Physique des Particules
Korea Research Environment Open Network
Akademi Sains Malaysia
Universiti Malaya
National Institute of Informatics
Korea Institute of Science and Technology Information
Bundesministerium für Bildung, Wissenschaft und Forschung
Instituto Nazionale di Fisica Nucleare
Thailand Center of Excellence in Physics
Department of Science and Technology, Ministry of Science and Technology, India
Centre National de la Recherche Scientifique
Max-Planck-Gesellschaft
Bundesministerium für Bildung und Forschung
Ministry of Education and Science of Ukraine
Helmholtz-Gemeinschaft
Canarie
Deutsche Forschungsgemeinschaft
European Commission
Ministry of Education and Science of the Russian Federation
CAS Center for Excellence in Particle Physics
Natural Sciences and Engineering Research Council of Canada
TUBITAK ULAKBIM
Horizon 2020 ERC-Advanced
National Research University Higher School of Economics
Compute Canada
European Research Council
Ministerstwo Edukacji i Nauki
Generalitat Valenciana, Spain
GLORIAD
Horizon 2020 ERC-Consolidator
Alexander von Humboldt-Stiftung
Ministry of Education, Culture, Sports, Science and Technology
Chinese Academy of Sciences and ResearchQYZDJ-SSW-SLH011
National Science FoundationPHY-2111604, PHY-1913789, 1913789
Horizon 2020 Marie Sklodowska-Curie101026516
Grantová Agentura České Republiky22-18469S
Austrian Science FundP 31361, J 4625, P 31361-N36
Ministerstvo Školství, Mládeže a TělovýchovyLTT17020
Horizon 2020 Framework Programme947006, 700525, 822070, 884719, 267104, 622527, 819127, 101026516, 1913789
Australian Research CouncilDP170102204, FT120100745, DP180102629, DP150103061, DE220100462, FT130100018, DP170102389, FT130100303
Liaoning Revitalization Talents ProgramXLYC1807135
National Research Foundation of Korea2022R1A2C1003993, 2016R1D1A1B02012900, 2018R1A2B3003643, 2018R1D1A1B07047294, RS-2022-00197659, 2019R1I1A3A01058933, 2018R1A6A1A06024970
U.S. Department of Energy and ResearchDE-SC0010007, DE-SC0010118, DE-AC06-76RLO1830, DE-SC0010504, DE-SC0012704, DE-SC0010073, DE-SC0011784, DE-SC0021274, DE-SC0022350, DE-SC0019230, DE-SC0009824, DE-SC0007983, DE-SC0009973
Science Committee of the Republic of Armenia20TTCG-1C010
National Natural Science Foundation of China and Research11521505, 11975076, 11761141009, 11575017, 11705209, 11675166
Natural Science Foundation of Shandong ProvinceZR2022JQ02
SEP-CINVESTAV237
Shanghai Pujiang Program18PJ1401000
University of Tabuk ResearchS-0280-1439, S-0256-1438
Seventh FrameworkPIEF-GA-2013-622527
Japan Society for the Promotion of Science16H06492, 26400255, 18H05226, 18K03621, 22H00144, 19H00682, 26220706, 17H01133, 16K05323, 16H03993, 16H03968, 17H05405, 18H03710
National Research Foundation of Ukraine2020.02/0257
Vietnam Academy of Science and TechnologyDL0000.05/21-23
CIDEGENT/2018/020 Ministry of Science and Technology and ResearchMOST107-2119-M-002-035-MY3, MOST106-2112-M-002-005-MY3
Israel Science Foundation2476/17
United States-Israel Binational Science Foundation2016113
Department of Atomic Energy, Government of IndiaRTI 4002
Slovenian Research Agency and ResearchJ1-9124, P1-0135
Univerzita Karlova v PrazeSVV 260448
Agencia Estatal de InvestigaciónRYC2020-029875-I
Israel Ministry of Science3-16543
Ministry of Higher Education, MalaysiaFOINS-296, CB-236394, CB-254409, CB-180023, CB-221329

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