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Measurement of the B0 lifetime and flavor-oscillation frequency using hadronic decays reconstructed in 2019-2021 Belle II dataopen access

Authors
Abudinén, F.Adachi, I.Aggarwal, L.Ahmed, H.Aihara, H.Akopov, N.Aloisio, A.Anh Ky, N.Asner, D.M.Atmacan, H.Aushev, T.Aushev, V.Bae, H.Bahinipati, S.Bambade, P.Banerjee, Sw.Bansal, S.Barrett, M.Baudot, J.Bauer, M.Baur, A.Beaubien, A.Becker, J.Bennett, J.V.Bernieri, E.Bernlochner, F.U.Bertacchi, V.Bertemes, M.Bertholet, E.Bessner, M.Bettarini, S.Bhardwaj, V.Bhuyan, B.Bianchi, F.Bilka, T.Bilokin, S.Biswas, D.Bobrov, A.Bodrov, D.Borah, J.Bozek, A.Bračko, M.Briere, R.A.Browder, T.E.Budano, A.Bussino, S.Campajola, M.Cao, L.Casarosa, G.Cecchi, C.Cerasoli, J.Chang, P.Cheema, P.Chekelian, V.Chen, C.Cheon, B.G.Chilikin, K.Chirapatpimol, K.Cho, H.-E.Cho, K.Cho, S.-J.Choi, S.-K.Choudhury, S.Cochran, J.Corona, L.Cunliffe, S.Dattola, F.De La Cruz-Burelo, E.De La Motte, S.A.De Marino, G.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.DoleŽal, Z.Domínguez Jiménez, I.Dong, T.V.Dorigo, M.Dort, K.Dossett, D.Dreyer, S.Dubey, S.Dujany, G.Ecker, P.Eliachevitch, M.Epifanov, D.Feichtinger, P.Ferber, T.Ferlewicz, D.Fillinger, T.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.Glazov, A.Gobbo, B.Godang, R.Goldenzweig, P.Gradl, W.Grammatico, T.Granderath, S.Graziani, E.Greenwald, D.Gruberová, Z.Gu, T.Gudkova, K.Halder, S.Hara, K.Hara, T.Hayasaka, K.Hayashii, H.Hazra, S.Hearty, C.Hedges, M.T.Heredia De La Cruz, I.Hernández Villanueva, M.Hershenhorn, A.Higuchi, T.Hill, E.C.Hohmann, M.Hsu, C.-L.Humair, T.Iijima, T.Inami, K.Ipsita, N.Ishikawa, A.Ito, S.Itoh, R.Iwasaki, M.Jacobs, W.W.Jaffe, D.E.Jang, E.-J.Ji, Q.P.Jia, S.Jin, Y.Junkerkalefeld, H.Kaleta, M.Kaliyar, A.B.Kang, K.H.Karyan, G.Kawasaki, T.Kiesling, C.Kim, C.-H.Kim, D.Y.Kim, K.-H.Kim, Y.-K.Kindo, H.Kodyš, P.Koga, T.Kohani, S.Kojima, K.Korobov, A.Korpar, S.Kovalenko, E.Kowalewski, R.KriŽan, P.Krokovny, P.Kuhr, T.Kumar, J.Kumar, R.Kumara, K.Kunigo, T.Kuzmin, A.Kwon, Y.-J.Lacaprara, S.Lange, J.S.Laurenza, M.Leboucher, R.Le Diberder, F.R.Leitl, P.Levit, D.Lewis, P.M.Li, L.K.Libby, J.Liptak, Z.Liu, Q.Y.Liu, Z.Q.Liventsev, D.Longo, S.Lueck, T.Lyu, C.Ma, Y.Maggiora, M.Maharana, S.P.Maiti, R.Maity, S.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.Matsuoka, K.Matvienko, D.Maurya, S.K.McKenna, J.A.Meier, F.Merola, M.Metzner, F.Milesi, M.Miller, C.Miyabayashi, K.Miyake, H.Mizuk, R.Mohanty, G.B.Molina-Gonzalez, N.Moneta, S.Moser, H.-G.Mrvar, M.Mussa, R.Nakamura, I.Nakamura, K.R.Nakao, M.Nakazawa, Y.Narimani Charan, A.Naruki, M.Narwal, D.Natochii, A.Nayak, L.Nazaryan, G.Niebuhr, C.Nisar, N.K.Nishida, S.Ogawa, S.Ono, H.Onuki, Y.Oskin, P.Pakhlov, P.Pakhlova, G.Paladino, A.Panta, A.Pardi, S.Parham, K.Park, J.Park, S.-H.Paschen, B.Passeri, A.Patra, S.Paul, S.Pedlar, T.K.Peruzzi, I.Peschke, R.Pestotnik, R.Pham, F.Piilonen, L.E.Pinna Angioni, G.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.Roney, J.M.Rostomyan, A.Rout, N.Sakai, Y.Sanders, D.A.Sandilya, S.Sangal, A.Santelj, L.Sato, Y.Scavino, B.Schmitt, C.Schwanda, C.Schwartz, A.J.Seino, Y.Selce, A.Senyo, K.Serrano, J.Sevior, M.E.Sfienti, C.Shan, W.Sharma, C.Shen, C.P.Shillington, T.Shiu, J.-G.Shtol, D.Simon, F.Singh, J.B.Skorupa, J.Sobie, R.J.Soffer, A.Solovieva, E.Spataro, S.Spruck, B.Starič, M.Stefkova, S.Stroili, R.Sue, Y.Sumihama, M.Sutcliffe, W.Suzuki, S.Y.Svidras, H.Takahashi, M.Takizawa, M.Tamponi, U.Tanaka, S.Tanida, K.Tanigawa, H.Taniguchi, N.Tenchini, F.Tiwary, R.Tonelli, D.Torassa, E.Trabelsi, K.Tsaklidis, I.Uchida, M.Ueda, I.Uematsu, Y.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.Vossen, A.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.Ye, H.Yelton, J.Yin, J.H.Yook, Y.M.Yoshihara, K.Yusa, Y.Zani, L.Zhai, Y.Zhang, Y.Zhilich, V.Zhou, Q.D.Zhou, X.Y.Zhukova, V.I.Žlebčík, R.Belle II Collaboration
Issue Date
May-2023
Publisher
American Physical Society
Citation
Physical Review D, v.107, no.9
Journal Title
Physical Review D
Volume
107
Number
9
URI
https://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/49522
DOI
10.1103/PhysRevD.107.L091102
ISSN
2470-0010
2470-0029
Abstract
We measure the B0 lifetime and flavor-oscillation frequency using B0→D(∗)-π+ decays collected by the Belle II experiment in asymmetric-energy e+e- collisions produced by the SuperKEKB collider operating at the ϒ(4S) resonance. We fit the decay-time distribution of signal decays, where the initial flavor is determined by identifying the flavor of the other B meson in the event. The results, based on 33000 signal decays reconstructed in a data sample corresponding to 190 fb-1, are τB0=(1.499±0.013±0.008) ps, Δmd=(0.516±0.008±0.005) ps-1, where the first uncertainties are statistical and the second are systematic. These results are consistent with the world-average values. © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the https://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.
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