B-flavor tagging at Belle II

F. Abudinén; N. Akopov; A. Aloisio; V. Babu; Sw Banerjee; M. Bauer; J. V. Bennett; F. U. Bernlochner; M. Bessner; S. Bettarini; T. Bilka; S. Bilokin; D. Biswas; D. Bodrov; J. Borah; M. Bračko; P. Branchini; A. Budano; M. Campajola; G. Casarosa; C. Cecchi; R. Cheaib; V. Chekelian; C. Chen; Y. Q. Chen; H. E. Cho; S. Cunliffe; G. De Nardo; G. De Pietro; R. de Sangro; S. Dey; A. Di Canto; F. Di Capua; T. V. Dong; G. Dujany; P. Ecker; M. Eliachevitch; T. Ferber; F. Forti; E. Ganiev; A. Gaz; M. Gelb; J. Gemmler; R. Godang; P. Goldenzweig; E. Graziani; K. Hara; A. Hershenhorn; T. Higuchi; E. C. Hill; M. Hohmann; T. Humair; G. Inguglia; H. Junkerkalefeld; R. Karl; Y. Kato; T. Keck; C. Kiesling; C. H. Kim; S. Kohani; I. Komarov; T. M.G. Kraetzschmar; P. Križan; J. F. Krohn; T. Kuhr; J. Kumar; K. Kumara; S. Kurz; S. Lacaprara; C. La Licata; M. Laurenza; K. Lautenbach; S. C. Lee; K. Lieret; L. Li Gioi; Q. Y. Liu; S. Longo; M. Maggiora; E. Manoni; C. Marinas; A. Martini; F. Meier; M. Merola; F. Metzner; M. Milesi; K. Miyabayashi; G. B. Mohanty; F. Mueller; C. Murphy; E. R. Oxford; S. H. Park; A. Passeri; F. Pham; L. E. Piilonen; S. Pokharel; M. T. Prim; C. Pulvermacher; P. Rados; M. Ritter; A. Rostomyan; S. Sandilya; L. Santelj; Y. Sato; A. J. Schwartz; M. E. Sevior; A. Soffer; S. Spataro; R. Stroili; W. Sutcliffe; D. Tagnani; M. Takizawa; U. Tamponi; F. Tenchini; E. Torassa; P. Urquijo; L. Vitale; Y. Yusa; L. Zani; Q. D. Zhou; R. Žlebčík; A. Zupanc

doi:10.1140/epjc/s10052-022-10180-9

B-flavor tagging at Belle II

F. Abudinén^*, N. Akopov, A. Aloisio, V. Babu, Sw Banerjee, M. Bauer, J. V. Bennett, F. U. Bernlochner, M. Bessner, S. Bettarini, T. Bilka, S. Bilokin, D. Biswas, D. Bodrov, J. Borah, M. Bračko, P. Branchini, A. Budano, M. Campajola, G. CasarosaC. Cecchi, R. Cheaib, V. Chekelian, C. Chen, Y. Q. Chen, H. E. Cho, S. Cunliffe, G. De Nardo, G. De Pietro, R. de Sangro, S. Dey, A. Di Canto, F. Di Capua, T. V. Dong, G. Dujany, P. Ecker, M. Eliachevitch, T. Ferber, F. Forti, E. Ganiev, A. Gaz, M. Gelb, J. Gemmler, R. Godang, P. Goldenzweig, E. Graziani, K. Hara, A. Hershenhorn, T. Higuchi, E. C. Hill, M. Hohmann, T. Humair, G. Inguglia, H. Junkerkalefeld, R. Karl, Y. Kato, T. Keck, C. Kiesling, C. H. Kim, S. Kohani, I. Komarov, T. M.G. Kraetzschmar, P. Križan, J. F. Krohn, T. Kuhr, J. Kumar, K. Kumara, S. Kurz, S. Lacaprara, C. La Licata, M. Laurenza, K. Lautenbach, S. C. Lee, K. Lieret, L. Li Gioi, Q. Y. Liu, S. Longo, M. Maggiora, E. Manoni, C. Marinas, A. Martini, F. Meier, M. Merola, F. Metzner, M. Milesi, K. Miyabayashi, G. B. Mohanty, F. Mueller, C. Murphy, E. R. Oxford, S. H. Park, A. Passeri, F. Pham, L. E. Piilonen, S. Pokharel, M. T. Prim, C. Pulvermacher, P. Rados, M. Ritter, A. Rostomyan, S. Sandilya, L. Santelj, Y. Sato, A. J. Schwartz, M. E. Sevior, A. Soffer, S. Spataro, R. Stroili, W. Sutcliffe, D. Tagnani, M. Takizawa, U. Tamponi, F. Tenchini, E. Torassa, P. Urquijo, L. Vitale, Y. Yusa, L. Zani, Q. D. Zhou, R. Žlebčík, A. Zupanc

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

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
Article number	283
Journal	European Physical Journal C
Volume	82
Issue number	4
DOIs	https://doi.org/10.1140/epjc/s10052-022-10180-9
State	Published - Apr 2022

Funding

Funders	Funder 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
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

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10.1140/epjc/s10052-022-10180-9

Cite this

Abudinén, F., Akopov, N., Aloisio, A., Babu, V., Banerjee, S., Bauer, M., Bennett, J. V., Bernlochner, F. U., Bessner, M., Bettarini, S., Bilka, T., Bilokin, S., Biswas, D., Bodrov, D., Borah, J., Bračko, M., Branchini, P., Budano, A., Campajola, M., ... Zupanc, A. (2022). B-flavor tagging at Belle II. European Physical Journal C, 82(4), Article 283. https://doi.org/10.1140/epjc/s10052-022-10180-9

@article{ccb2b0ca50eb4bdcb9be2239f0e8259b,

title = "B-flavor tagging at Belle II",

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.",

author = "F. Abudin{\'e}n and N. Akopov and A. Aloisio and V. Babu and Sw Banerjee and M. Bauer and Bennett, {J. V.} and Bernlochner, {F. U.} and M. Bessner and S. Bettarini and T. Bilka and S. Bilokin and D. Biswas and D. Bodrov and J. Borah and M. Bra{\v c}ko and P. Branchini and A. Budano and M. Campajola and G. Casarosa and C. Cecchi and R. Cheaib and V. Chekelian and C. Chen and Chen, {Y. Q.} and Cho, {H. E.} and S. Cunliffe and {De Nardo}, G. and {De Pietro}, G. and {de Sangro}, R. and S. Dey and Canto, {A. Di} and Capua, {F. Di} and Dong, {T. V.} and G. Dujany and P. Ecker and M. Eliachevitch and T. Ferber and F. Forti and E. Ganiev and A. Gaz and M. Gelb and J. Gemmler and R. Godang and P. Goldenzweig and E. Graziani and K. Hara and A. Hershenhorn and T. Higuchi and Hill, {E. C.} and M. Hohmann and T. Humair and G. Inguglia and H. Junkerkalefeld and R. Karl and Y. Kato and T. Keck and C. Kiesling and Kim, {C. H.} and S. Kohani and I. Komarov and Kraetzschmar, {T. M.G.} and P. Kri{\v z}an and Krohn, {J. F.} and T. Kuhr and J. Kumar and K. Kumara and S. Kurz and S. Lacaprara and {La Licata}, C. and M. Laurenza and K. Lautenbach and Lee, {S. C.} and K. Lieret and Gioi, {L. Li} and Liu, {Q. Y.} and S. Longo and M. Maggiora and E. Manoni and C. Marinas and A. Martini and F. Meier and M. Merola and F. Metzner and M. Milesi and K. Miyabayashi and Mohanty, {G. B.} and F. Mueller and C. Murphy and Oxford, {E. R.} and Park, {S. H.} and A. Passeri and F. Pham and Piilonen, {L. E.} and S. Pokharel and Prim, {M. T.} and C. Pulvermacher and P. Rados and M. Ritter and A. Rostomyan and S. Sandilya and L. Santelj and Y. Sato and Schwartz, {A. J.} and Sevior, {M. E.} and A. Soffer and S. Spataro and R. Stroili and W. Sutcliffe and D. Tagnani and M. Takizawa and U. Tamponi and F. Tenchini and E. Torassa and P. Urquijo and L. Vitale and Y. Yusa and L. Zani and Zhou, {Q. D.} and R. {\v Z}leb{\v c}{\'i}k and A. Zupanc",

note = "Publisher Copyright: {\textcopyright} 2022, The Author(s).",

year = "2022",

month = apr,

doi = "10.1140/epjc/s10052-022-10180-9",

language = "אנגלית",

volume = "82",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "4",

}

Abudinén, F, Akopov, N, Aloisio, A, Babu, V, Banerjee, S, Bauer, M, Bennett, JV, Bernlochner, FU, Bessner, M, Bettarini, S, Bilka, T, Bilokin, S, Biswas, D, Bodrov, D, Borah, J, Bračko, M, Branchini, P, Budano, A, Campajola, M, Casarosa, G, Cecchi, C, Cheaib, R, Chekelian, V, Chen, C, Chen, YQ, Cho, HE, Cunliffe, S, De Nardo, G, De Pietro, G, de Sangro, R, Dey, S, Canto, AD, Capua, FD, Dong, TV, Dujany, G, Ecker, P, Eliachevitch, M, Ferber, T, Forti, F, Ganiev, E, Gaz, A, Gelb, M, Gemmler, J, Godang, R, Goldenzweig, P, Graziani, E, Hara, K, Hershenhorn, A, Higuchi, T, Hill, EC, Hohmann, M, Humair, T, Inguglia, G, Junkerkalefeld, H, Karl, R, Kato, Y, Keck, T, Kiesling, C, Kim, CH, Kohani, S, Komarov, I, Kraetzschmar, TMG, Križan, P, Krohn, JF, Kuhr, T, Kumar, J, Kumara, K, Kurz, S, Lacaprara, S, La Licata, C, Laurenza, M, Lautenbach, K, Lee, SC, Lieret, K, Gioi, LL, Liu, QY, Longo, S, Maggiora, M, Manoni, E, Marinas, C, Martini, A, Meier, F, Merola, M, Metzner, F, Milesi, M, Miyabayashi, K, Mohanty, GB, Mueller, F, Murphy, C, Oxford, ER, Park, SH, Passeri, A, Pham, F, Piilonen, LE, Pokharel, S, Prim, MT, Pulvermacher, C, Rados, P, Ritter, M, Rostomyan, A, Sandilya, S, Santelj, L, Sato, Y, Schwartz, AJ, Sevior, ME, Soffer, A, Spataro, S, Stroili, R, Sutcliffe, W, Tagnani, D, Takizawa, M, Tamponi, U, Tenchini, F, Torassa, E, Urquijo, P, Vitale, L, Yusa, Y, Zani, L, Zhou, QD, Žlebčík, R & Zupanc, A 2022, 'B-flavor tagging at Belle II', European Physical Journal C, vol. 82, no. 4, 283. https://doi.org/10.1140/epjc/s10052-022-10180-9

TY - JOUR

T1 - B-flavor tagging at Belle II

AU - Abudinén, F.

AU - Akopov, N.

AU - Aloisio, A.

AU - Babu, V.

AU - Banerjee, Sw

AU - Bauer, M.

AU - Bennett, J. V.

AU - Bernlochner, F. U.

AU - Bessner, M.

AU - Bettarini, S.

AU - Bilka, T.

AU - Bilokin, S.

AU - Biswas, D.

AU - Bodrov, D.

AU - Borah, J.

AU - Bračko, M.

AU - Branchini, P.

AU - Budano, A.

AU - Campajola, M.

AU - Casarosa, G.

AU - Cecchi, C.

AU - Cheaib, R.

AU - Chekelian, V.

AU - Chen, C.

AU - Chen, Y. Q.

AU - Cho, H. E.

AU - Cunliffe, S.

AU - De Nardo, G.

AU - De Pietro, G.

AU - de Sangro, R.

AU - Dey, S.

AU - Canto, A. Di

AU - Capua, F. Di

AU - Dong, T. V.

AU - Dujany, G.

AU - Ecker, P.

AU - Eliachevitch, M.

AU - Ferber, T.

AU - Forti, F.

AU - Ganiev, E.

AU - Gaz, A.

AU - Gelb, M.

AU - Gemmler, J.

AU - Godang, R.

AU - Goldenzweig, P.

AU - Graziani, E.

AU - Hara, K.

AU - Hershenhorn, A.

AU - Higuchi, T.

AU - Hill, E. C.

AU - Hohmann, M.

AU - Humair, T.

AU - Inguglia, G.

AU - Junkerkalefeld, H.

AU - Karl, R.

AU - Kato, Y.

AU - Keck, T.

AU - Kiesling, C.

AU - Kim, C. H.

AU - Kohani, S.

AU - Komarov, I.

AU - Kraetzschmar, T. M.G.

AU - Križan, P.

AU - Krohn, J. F.

AU - Kuhr, T.

AU - Kumar, J.

AU - Kumara, K.

AU - Kurz, S.

AU - Lacaprara, S.

AU - La Licata, C.

AU - Laurenza, M.

AU - Lautenbach, K.

AU - Lee, S. C.

AU - Lieret, K.

AU - Gioi, L. Li

AU - Liu, Q. Y.

AU - Longo, S.

AU - Maggiora, M.

AU - Manoni, E.

AU - Marinas, C.

AU - Martini, A.

AU - Meier, F.

AU - Merola, M.

AU - Metzner, F.

AU - Milesi, M.

AU - Miyabayashi, K.

AU - Mohanty, G. B.

AU - Mueller, F.

AU - Murphy, C.

AU - Oxford, E. R.

AU - Park, S. H.

AU - Passeri, A.

AU - Pham, F.

AU - Piilonen, L. E.

AU - Pokharel, S.

AU - Prim, M. T.

AU - Pulvermacher, C.

AU - Rados, P.

AU - Ritter, M.

AU - Rostomyan, A.

AU - Sandilya, S.

AU - Santelj, L.

AU - Sato, Y.

AU - Schwartz, A. J.

AU - Sevior, M. E.

AU - Soffer, A.

AU - Spataro, S.

AU - Stroili, R.

AU - Sutcliffe, W.

AU - Tagnani, D.

AU - Takizawa, M.

AU - Tamponi, U.

AU - Tenchini, F.

AU - Torassa, E.

AU - Urquijo, P.

AU - Vitale, L.

AU - Yusa, Y.

AU - Zani, L.

AU - Zhou, Q. D.

AU - Žlebčík, R.

AU - Zupanc, A.

PY - 2022/4

Y1 - 2022/4

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85127484899&partnerID=8YFLogxK

U2 - 10.1140/epjc/s10052-022-10180-9

DO - 10.1140/epjc/s10052-022-10180-9

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AN - SCOPUS:85127484899

SN - 1434-6044

VL - 82

JO - European Physical Journal C

JF - European Physical Journal C

IS - 4

M1 - 283

ER -

B-flavor tagging at Belle II

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