Abstract
We report on new flavor tagging algorithms developed to determine the quark-flavor content of bottom ([InlineMediaObject not available: see fulltext.]) mesons at Belle II. The algorithms provide essential inputs for measurements of quark-flavor mixing and charge-parity violation. We validate and evaluate the performance of the algorithms using hadronic [InlineMediaObject not available: see fulltext.] decays with flavor-specific final states reconstructed in a data set corresponding to an integrated luminosity of 62.8 fb- 1, collected at the [InlineEquation not available: see fulltext.] resonance with the Belle II detector at the SuperKEKB collider. We measure the total effective tagging efficiency to be εeff=(30.0±1.2(stat)±0.4(syst))%for a category-based algorithm and εeff=(28.8±1.2(stat)±0.4(syst))%for a deep-learning-based algorithm.
Original language | English |
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Article number | 283 |
Journal | European Physical Journal C |
Volume | 82 |
Issue number | 4 |
DOIs | |
State | Published - Apr 2022 |
Funding
Funders | Funder number |
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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 | |
Horizon 2020 Marie Sklodowska-Curie | |
TUBITAK ULAKBIM | |
Compute Canada | |
European Research Council | |
Ministerstwo Edukacji i Nauki | |
Generalitat Valenciana | |
GLORIAD | |
Alexander von Humboldt-Stiftung | |
Ministry of Education, Culture, Sports, Science and Technology | |
Ministry of Science and Technology | MOST107-2119-M-002-035-MY3, MOST106-2112-M-002-005-MY3 |
Horizon 2020 Framework Programme | 947006, 700525, 822070, 267104, 884719, 1807007, 622527, 819127, PHY-1913789 |
National Research Foundation of Korea | 2016R1D1A1B02012900, 2018R1A2B3003643, 2018R1D1A1B07047294, 2019R1I1A3A01058933, 2016R1D1A1B01010135, 2019K1A3A7A09033840, 2018R1A6A1A06024970 |
Univerzita Karlova v Praze | SVV 260448, GAUK 404316 |
Austrian Science Fund | 31361-N36, P 31361 |
Department of Atomic Energy, Government of India | RTI 4002 |
Israel Science Foundation | 2476/17 |
Australian Research Council | DP170102204, FT120100745, DP180102629, DP150103061, FT130100018, DP170102389, FT130100303 |
Science Committee of the Republic of Armenia | 20TTCG-1C010 |
United States-Israel Binational Science Foundation | 2016113 |
Ministry of Higher Education, Malaysia | FOINS-296, CB-180023, CB-236394, CB-254409, CB-221329 |
Javna Agencija za Raziskovalno Dejavnost RS | J1-9124, P1-0135 |
SEP-CINVESTAV | 237 |
Shanghai Pujiang Program | 18PJ1401000 |
Liaoning Revitalization Talents Program | XLYC1807135 |
National Science Foundation | PHY-1807007, 1807007, PHY-1913789 |
Israel Ministry of Science | 3-16543 |
National Research University Higher School of Economics | S-0280-1439, S-0256-1438 |
Vietnam Academy of Science and Technology | DL0000.05/21-23 |
Science and Technology Commission of Shanghai Municipality | 19ZR1403000 |
U.S. Department of Energy | DE-SC0021274, DE-SC0010007, DE-AC06-76RLO1830, DE-SC0010118, DE-SC0010504, DE-SC0012704, DE-SC0010073, DE-SC0009824, DE-SC0007983, DE-SC0011784, DE-SC0009973 |
Japan Society for the Promotion of Science | 26400255, 18K03621, 18H05226, 16H06492, 19H00682, 26220706, 17H01133, 16H03968, 17H05405, 16K05323, 18H03710, 16H03993 |
National Natural Science Foundation of China | 11521505, 11761141009, 11975076, 11575017, 11705209, 11675166 |
7th Framework | PIEF-GA-2013-622527 |
Chinese Academy of Sciences | QYZDJ-SSW-SLH011 |
Agencia Estatal de Investigación | CIDEGENT/2018/020, FPA2017-84445-P, FPA2014-55613-P |
Ministerstvo Školství, Mládeže a Tělovýchovy | LTT17020 |