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Novel method for the identification of the production flavor of neutral charmed mesonsopen access

Authors
Adachi, I.Aggarwal, L.Ahmed, H.Aihara, H.Akopov, N.Aloisio, A.Ky, N. AnhAsner, D. M.Atmacan, H.Aushev, T.Aushev, V.Aversano, M.Babu, V.Bae, H.Bahinipati, S.Bambade, P.Banerjee, Sw.Barrett, M.Baudot, J.Bauer, M.Baur, A.Beaubien, A.Becker, J.Behera, P. K.Bennett, J., VBernlochner, F. U.Bertacchi, V.Bertemes, M.Bertholet, E.Bessner, M.Bettarini, S.Bhuyan, B.Bianchi, F.Bilka, T.Biswas, D.Bobrov, A.Bodrov, D.Bolz, A.Bondar, A.Borah, J.Bozek, A.Bracko, M.Branchini, P.Briere, R. A.Browder, T. E.Budano, A.Bussino, S.Campajola, M.Cao, L.Casarosa, G.Cecchi, C.Cerasoli, J.Chang, M. -C.Chang, P.Cheaib, R.Cheema, P.Chekelian, V.Cheon, B. G.Chilikin, K.Chirapatpimol, K.Cho, H. -E.Cho, K.Cho, S. -J.Choi, S. -K.Choudhury, S.Corona, L.Cremaldi, L. M.Das, S.Dattola, F.De La Cruz-Burelo, E.De La Motte, S. A.De Nardo, G.De Nuccio, M.De Pietro, G.de Sangro, R.Destefanis, M.De Yta-Hernandez, A.Dhamija, R.Di Canto, A.Di Capua, F.Dingfelder, J.Dolezal, Z.Jimenez, I. DominguezDong, T., VDorigo, M.Dort, K.Dreyer, S.Dubey, S.Dujany, G.Ecker, P.Eliachevitch, M.Feichtinger, P.Ferber, T.Ferlewicz, D.Fillinger, T.Finck, C.Finocchiaro, G.Fodor, A.Forti, F.Frey, A.Fulsom, B. G.Gabrielli, A.Ganiev, E.Garcia-Hernandez, M.Gaudino, G.Gaur, V.Gaz, A.Gellrich, A.Ghevondyan, G.Ghosh, D.Giakoustidis, G.Giordano, R.Giri, A.Gobbo, B.Godang, R.Goldenzweig, P.Gradl, W.Grammatico, T.Granderath, S.Graziani, E.Greenwald, D.Gruberova, Z.Gu, T.Guan, Y.Gudkova, K.Halder, S.Han, Y.Hara, T.Hayasaka, K.Hayashii, H.Hazra, S.Hearty, C.Hedges, M. T.de la Cruz, I. HerediaVillanueva, M. HernandezHershenhorn, A.Higuchi, T.Hill, E. C.Hoek, M.Hohmann, M.Hsu, C. -L.Iijima, T.Inami, K.Inguglia, G.Ipsita, N.Ishikawa, A.Ito, S.Itoh, R.Iwasaki, M.Jackson, P.Jacobs, W. W.Jaffe, D. E.Jang, E. -J.Ji, Q. P.Jia, S.Jin, Y.Johnson, A.Joo, K. K.Junkerkalefeld, H.Kakuno, H.Kaliyar, A. B.Kandra, J.Kang, K. H.Kang, S.Karyan, G.Kawasaki, T.Keil, F.Ketter, C.Kiesling, C.Kim, C. -H.Kim, D. Y.Kim, K. -H.Kim, Y. -K.Kinoshita, K.Kodys, P.Koga, T.Kohani, S.Korobov, A.Korpar, S.Kovalenko, E.Kowalewski, R.Kraetzschmar, T. M. G.Krizan, P.Krokovny, P.Kumar, M.Kumara, K.Kunigo, T.Kuzmin, A.Kwon, Y. -J.Lacaprara, S.Lai, Y. -T.Lam, T.Lange, J. S.Laurenza, M.Lautenbach, K.Leboucher, R.Le Diberder, F. R.Leitl, P.Levit, D.Li, C.Li, L. K.Libby, J.Liu, Q. Y.Liu, Z. Q.Longo, S.Lozar, A.Lueck, T.Lyu, C.Ma, Y.Maggiora, M.Maiti, R.Maity, S.Mancinelli, G.Manfredi, R.Manoni, E.Manthei, A. C.Mantovano, M.Marcantonio, D.Marcello, S.Marinas, C.Martel, L.Martellini, C.Martini, A.Martinov, T.Massaccesi, L.Masuda, M.Matvienko, D.Maurya, S. K.McKenna, J. A.Mehta, R.Meier, F.Merola, M.Metzner, F.Milesi, M.Miller, C.Mirra, M.Miyabayashi, K.Mizuk, R.Mohanty, G. B.Molina-Gonzalez, N.Mondal, S.Moneta, S.Moser, H. -G.Mussa, R.Nakamura, I.Nakazawa, Y.Charan, A. NarimaniNaruki, M.Natkaniec, Z.Natochii, A.Nayak, L.Nayak, M.Nazaryan, G.Niiyama, M.Nisar, N. K.Nishida, S.Ogawa, S.Ono, H.Onuki, Y.Oskin, P.Oxford, E. R.Pakhlov, P.Pakhlova, G.Paladino, A.Panta, A.Paoloni, E.Pardi, S.Parham, K.Park, H.Park, S. -H.Paschen, B.Patra, S.Paul, S.Pedlar, T. K.Peschke, R.Pestotnik, R.Piccolo, M.Piilonen, L. E.Podesta-Lerma, P. L. M.Podobnik, T.Pokharel, S.Polat, L.Praz, C.Prell, S.Prencipe, E.Prim, M. T.Purwar, H.Rad, N.Rados, P.Raeuber, G.Raiz, S.Reif, M.Reiter, S.Ripp-Baudot, I.Rizzo, G.Rizzuto, L. B.Robertson, S. H.Roehrken, M.Roney, J. M.Rostomyan, A.Rout, N.Sanders, D. A.Sandilya, S.Sangal, A.Santelj, L.Sato, Y.Savinov, V.Scavino, B.Schnepf, M.Schwanda, C.Seino, Y.Selce, A.Senyo, K.Serrano, J.Sevior, M. E.Sfienti, C.Shan, W.Sharma, C.Shi, X. D.Shillington, T.Shiu, J. -G.Shtol, D.Sibidanov, A.Simon, F.Singh, J. B.Skorupa, J.Sobie, R. J.Sobotzik, M.Soffer, A.Sokolov, A.Solovieva, E.Spataro, S.Spruck, B.Staric, M.Stefkova, S.Stottler, Z. S.Stroili, R.Sumihama, M.Sutcliffe, W.Svidras, H.Takahashi, M.Takizawa, M.Tamponi, U.Tanida, K.Tenchini, F.Thaller, A.Tittel, O.Tiwary, R.Tonelli, D.Torassa, E.Trabelsi, K.Tsaklidis, I.Uchida, M.Ueda, I.Uglov, T.Unger, K.Unno, Y.Uno, K.Uno, S.Urquijo, P.Ushiroda, Y.Vahsen, S. E.van Tonder, R.Varner, G. S.Varvell, K. E.Vinokurova, A.Vismaya, V. S.Vitale, L.Vobbilisetti, V.Wach, B.Wakai, M.Wakeling, H. M.Wallner, S.Wang, E.Wang, M. -Z.Wang, X. L.Wang, Z.Warburton, A.Watanabe, M.Watanuki, S.Welsch, M.Wessel, C.Won, E.Xu, X. P.Yabsley, B. D.Yamada, S.Yan, W.Yang, S. B.Yin, J. H.Yook, Y. M.Yoshihara, K.Yuan, C. Z.Yusa, Y.Zani, L.Zhilich, V.Zhou, J. S.Zhou, Q. D.Zhukova, V. I.Belle II Collaboration
Issue Date
Jun-2023
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.107, no.11
Journal Title
PHYSICAL REVIEW D
Volume
107
Number
11
URI
https://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/49489
DOI
10.1103/PhysRevD.107.112010
ISSN
2470-0010
2470-0029
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(-) -> c (c) over bar 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 Upsilon(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.
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