Measurement of the B ¯ →xsγ branching fraction with a sum of exclusive decays MEASUREMENT of THE. T. SAITO et al.

T. Saito, A. Ishikawa, H. Yamamoto, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, K. Arinstein, D. M. Asner, T. Aushev, R. Ayad, A. M. Bakich, V. Bansal, B. Bhuyan, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, T. E. BrowderD. Červenkov, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, V. Chobanova, S. K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, J. Dingfelder, Z. DoleŽal, Z. Drásal, A. Drutskoy, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, D. Getzkow, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, J. Hasenbusch, K. Hayasaka, H. Hayashii, X. H. He, T. Higuchi, T. Horiguchi, W. S. Hou, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, Y. Iwasaki, I. Jaegle, D. Joffe, T. Julius, K. H. Kang, E. Kato, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodyš, S. Korpar, P. KriŽan, P. Krokovny, B. Kronenbitter, T. Kuhr, Y. J. Kwon, J. S. Lange, I. S. Lee, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, R. Mussa, E. Nakano, M. Nakao, H. Nakazawa, T. Nanut, Z. Natkaniec, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, C. Oswald, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, T. K. Pedlar, R. Pestotnik, M. Petrič, L. E. Piilonen, E. RibeŽl, M. Ritter, A. Rostomyan, S. Ryu, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T. A. Shibata, J. G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. S. Sohn, E. Solovieva, M. Starič, M. Steder, T. Sumiyoshi, U. Tamponi, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, A. Vossen, M. N. Wagner, C. H. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, S. Yashchenko, Y. Yook, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

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35 Citations (Scopus)

Abstract

We use 772×106 BB¯ meson pairs collected at the ?(4S) resonance with the Belle detector to measure the branching fraction for B¯→Xsγ. Our measurement uses a sum-of-exclusives approach in which 38 of the hadronic final states with strangeness equal to +1, denoted by Xs, are reconstructed. The inclusive branching fraction for MXs<2.8GeV/c2, which corresponds to a minimum photon energy of 1.9 GeV, is measured to be B(B¯→Xsγ)=(3.51±0.17±0.33)×10-4, where the first uncertainty is statistical and the second is systematic.

Original languageEnglish
Article number052004
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume91
Issue number5
DOIs
Publication statusPublished - 2015 Mar 4

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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    Saito, T., Ishikawa, A., Yamamoto, H., Abdesselam, A., Adachi, I., Aihara, H., Al Said, S., Arinstein, K., Asner, D. M., Aushev, T., Ayad, R., Bakich, A. M., Bansal, V., Bhuyan, B., Bobrov, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., ... Zupanc, A. (2015). Measurement of the B ¯ →xsγ branching fraction with a sum of exclusive decays MEASUREMENT of THE. T. SAITO et al. Physical Review D - Particles, Fields, Gravitation and Cosmology, 91(5), [052004]. https://doi.org/10.1103/PhysRevD.91.052004