학술논문

Precise measurement of the $D^+_s$ lifetime at Belle II
Document Type
Working Paper
Author
Belle II CollaborationAdachi, I.Aggarwal, L.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. V.Bernlochner, F. U.Bertacchi, V.Bertemes, M.Bertholet, E.Bessner, M.Bettarini, S.Bhuyan, B.Bianchi, F.Bilka, T.Biswas, D.Bodrov, D.Bondar, A.Bozek, A.Bračko, 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.Cheema, P.Chekelian, V.Cheon, B. G.Chilikin, K.Chirapatpimol, K.Cho, H. -E.Cho, K.Choi, S. -K.Choudhury, S.Cochran, J.Corona, L.Das, S.Dattola, F.De La Motte, S. A.de Marino, G.De Nardo, G.De Nuccio, M.De Pietro, G.de Sangro, R.Destefanis, M.Dey, S.Dhamija, R.Di Canto, A.Di Capua, F.Dingfelder, J.Doležal, Z.Jiménez, I. DomínguezDong, T. V.Dorigo, M.Dort, K.Dreyer, S.Dubey, S.Dujany, G.Ecker, P.Epifanov, D.Feichtinger, P.Ferlewicz, D.Finck, C.Finocchiaro, G.Fodor, A.Forti, F.Frey, A.Fulsom, B. G.Gabrielli, A.Ganiev, E.Garcia-Hernandez, M.Garmash, A.Gaudino, G.Gaur, V.Gaz, A.Gellrich, A.Ghevondyan, G.Ghosh, D.Ghumaryan, H.Giakoustidis, G.Giordano, R.Giri, A.Glazov, A.Gobbo, B.Godang, R.Gogota, O.Goldenzweig, P.Gradl, W.Graziani, E.Greenwald, D.Gruberová, Z.Gu, T.Guan, Y.Gudkova, K.Han, Y.Hayasaka, K.Hayashii, H.Hazra, S.Hearty, C.de la Cruz, I. HerediaHershenhorn, A.Higuchi, T.Hill, E. C.Hoek, M.Hohmann, M.Hsu, C. -L.Humair, T.Iijima, T.Inami, K.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.Junkerkalefeld, H.Kaliyar, A. B.Kandra, J.Karyan, G.Kawasaki, T.Keil, F.Ketter, C.Kiesling, C.Kim, C. -H.Kim, D. Y.Kim, K. -H.Kim, Y. -K.Kindo, H.Kinoshita, K.Kodyš, P.Koga, T.Kohani, S.Kojima, K.Korobov, A.Korpar, S.Kowalewski, R.Kraetzschmar, T. M. G.Križan, P.Krokovny, P.Kuhr, T.Kumar, J.Kumar, M.Kumar, R.Kumara, K.Kuzmin, A.Kwon, Y. -J.Lacaprara, S.Lai, Y. -T.Lam, T.Lange, J. S.Laurenza, M.Leboucher, R.Diberder, F. R. LeLeitl, P.Levit, D.Lewis, P. M.Li, L. K.Libby, J.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.Mantovano, M.Marcantonio, D.Marcello, S.Marinas, C.Martellini, C.Martini, A.Martinov, T.Massaccesi, L.Masuda, M.Matsuda, T.Matsuoka, K.Matvienko, D.Maurya, S. K.McKenna, J. A.Mehta, R.Meier, F.Merola, M.Metzner, F.Milesi, M.Miller, C.Mirra, M.Miyabayashi, K.Mohanty, G. B.Molina-Gonzalez, N.Mondal, S.Moneta, S.Moser, H. -G.Mrvar, M.Mussa, R.Nakamura, I.Nakazawa, Y.Charan, A. NarimaniNaruki, M.Natkaniec, Z.Natochii, A.Nayak, L.Nazaryan, G.Nisar, N. K.Nishida, S.Ono, H.Otani, F.Oxford, E. R.Pakhlov, P.Pakhlova, G.Paladino, A.Panta, A.Paoloni, E.Pardi, S.Passeri, A.Patra, S.Paul, S.Pedlar, T. K.Peruzzi, I.Peschke, R.Pestotnik, R.Pham, F.Piccolo, M.Piilonen, L. E.Podobnik, T.Pokharel, S.Praz, C.Prell, S.Prencipe, E.Prim, M. T.Purwar, H.Rados, P.Raeuber, G.Raiz, S.Reif, M.Reiter, S.Remnev, M.Ripp-Baudot, I.Rizzo, G.Roney, J. M.Rostomyan, A.Rout, N.Russo, G.Sandilya, S.Sangal, A.Santelj, L.Sato, Y.Savinov, V.Scavino, B.Schmitt, C.Schwanda, C.Schwartz, A. J.Seino, Y.Selce, A.Senyo, K.Serrano, J.Sevior, M. E.Sfienti, C.Shan, W.Shi, X. D.Shillington, T.Shiu, J. -G.Shtol, D.Sibidanov, A.Simon, F.Sobie, R. J.Sobotzik, M.Soffer, A.Sokolov, A.Solovieva, E.Spataro, S.Spruck, B.Starič, M.Stavroulakis, P.Stottler, Z. S.Stroili, R.Sumihama, M.Svidras, H.Takahashi, M.Takizawa, M.Tamponi, U.Tanida, K.Tenchini, F.Tittel, O.Tonelli, D.Torassa, E.Trabelsi, K.Tsaklidis, I.Unger, K.Unno, Y.Uno, K.Uno, S.Urquijo, P.Ushiroda, Y.Vahsen, S. E.van Tonder, R.Varvell, K. E.Veronesi, M.Vismaya, V. S.Vitale, L.Volpe, R.Wach, B.Wallner, S.Wang, E.Wang, M. -Z.Wang, X. L.Wang, Z.Warburton, A.Watanabe, M.Wessel, C.Won, E.Xu, X. P.Yabsley, B. D.Yamada, S.Yan, W.Yang, S. B.Yoshihara, K.Yuan, C. Z.Yusa, Y.Zhang, Y.Zhilich, V.Zhou, J. S.Zhou, Q. D.Zhukova, V. I.Žlebčík, R.
Source
Phys. Rev. Lett. 131, 171803 (2023)
Subject
High Energy Physics - Experiment
Language
Abstract
We measure the lifetime of the $D_s^+$ meson using a data sample of 207 fb$^{-1}$ collected by the Belle II experiment running at the SuperKEKB asymmetric-energy $e^+ e^-$ collider. The lifetime is determined by fitting the decay-time distribution of a sample of $116\times 10^3$ $D_s^+\rightarrow\phi\pi^+$ decays. Our result is $\tau^{}_{D^+_s} = (499.5\pm 1.7\pm 0.9)$ fs, where the first uncertainty is statistical and the second is systematic. This result is significantly more precise than previous measurements.
Comment: 7 pages, 4 figures, as published in Physical Review Letters