A Measurement of the Branching Fraction for the Inclusive B → X s γ Decays with Belle The Belle Collaboration

K. Misono,K. Miyabayashi,H. Miyake, H. Miyata,L. C. Moffitt,G. R. Moloney,G. F. Moorhead,S. Mori,A. Murakami,T. Nagamine,Y. Nagasaka,Y. Nagashima,T. Nakadaira,E. Nakano,M. Nakao,J. W. Nam,S. Narita,Z. Natkaniec,K. Neichi,S. Nishida,O. Nitoh,S. Noguchi,T. Nozaki,S. Ogawa,T. Ohshima,Y. Ohshima,T. Okabe,T. Okazaki,S. Okuno,S. L. Olsen,W. Ostrowicz,H. Ozaki,H. Palka,C. S. Park,C. W. Park,H. Park,L. S. Peak,M. Peters,L. E. Piilonen,E. Prebys,J. L. Rodriguez,N. Root,M. Rozanska,K. Rybicki,J. Ryuko,H. Sagawa,Y. Sakai,H. Sakamoto,M. Satapathy,A. Satpathy,S. Schrenk,S. Semenov,K. Senyo,M. E. Sevior,H. Shibuya,B. Shwartz,V. Sidorov,J. B. Singh,S. Stanič,A. Sugi,A. Sugiyama,K. Sumisawa,T. Sumiyoshi,K. Suzuki, S. Suzuki,S. Y. Suzuki,S. K. Swain,H. Tajima,T. Takahashi,F. Takasaki,M. Takita,K. Tamai,N. Tamura,J. Tanaka,M. Tanaka,Y. Tanaka,G. N. Taylor,Y. Teramoto,M. Tomoto,T. Tomura,S. N. Tovey,K. Trabelsi,T. Tsuboyama, Y. Tsujita,T. Tsukamoto,S. Uehara,K. Ueno,N. Ujiie,Y. Unno,S. Uno,Y. Ushiroda,Y. Usov,S. E. Vahsen,G. Varner,K. E. Varvell,C. C. Wang,C. H. Wang,M.-Z. Wang,T. J. Wang,Y. Watanabe,E. Won,B. D. Yabsley,Y. Yamada,M. Yamaga, A. Yamaguchi,H. Yamamoto, H. Yamaoka, Y. Yamaoka,Y. Yamashita,M. Yamauchi,S. Yanaka,M. Yokoyama,K. Yoshida,Y. Yusa,H. Yuta,C. C. Zhang, J. Zhang,Y. Zheng,V. Zhilich,D. Žontar

semanticscholar（2001）

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摘要

We have measured the branching fraction of the inclusive radiative B meson decay B→Xsγ to be Br(B→Xsγ) = (3.36 ± 0.53(stat) ± 0.42(sys) −0.54(th)) × 10. The result is based on a sample of 6.07 × 106 BB̄ events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric e+e− storage ring. PACS: 13.40.Hq, 14.40.Nd, 14.65.Fy

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