Improved measurement of the electroweak penguin process B→Xs+-

M. Iwasaki, K. Itoh, H. Aihara, K. Abe, K. Abe, I. Adachi, Y. Asano, T. Aushev, S. Bahinipati, A. M. Bakich, S. Banerjee, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. BrowderM. C. Chang, P. Chang, Y. Chao, A. Chen, K. F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S. K. Choi, Y. Choi, A. Chuvikov, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, Y. Enari, S. Fratina, N. Gabyshev, T. Gershon, G. Gokhroo, B. Golob, A. Gorišek, J. Haba, T. Hara, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, Y. B. Hsiung, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, J. H. Kang, J. S. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, H. J. Kim, S. K. Kim, S. M. Kim, K. Kinoshita, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, J. S. Lange, G. Leder, S. E. Lee, T. Lesiak, J. Li, S. W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, D. Mohapatra, G. R. Moloney, T. Nagamine, Y. Nagasaka, I. Nakamura, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, H. Palka, C. W. Park, H. Park, N. Parslow, L. S. Peak, R. Pestotnik, L. E. Piilonen, N. Root, M. Rozanska, H. Sagawa, Y. Sakai, N. Sato, T. Schietinger, O. Schneider, P. Schönmeier, J. Schümann, C. Schwanda, A. J. Schwartz, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, S. Uno, P. Urquijo, Y. Ushiroda, G. Varner, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, M. Z. Wang, Y. Watanabe, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Heyoung Yang, J. Ying, L. M. Zhang, Z. P. Zhang, V. Zhilich, D. Žontar, D. Zürcher

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Abstract

We present an improved measurement of the branching fraction for the electroweak penguin process B→Xs+-, where is an electron or a muon and Xs is a hadronic system containing an s-quark. The measurement is based on a sample of 152×106 Υ(4S)→BB̄ events collected with the Belle detector at the KEKB energy asymmetric e+e- collider. The Xs hadronic system is reconstructed from one K± or KS0 and up to four pions, where at most one pion can be neutral. Averaging over both lepton flavors, the inclusive branching fraction is measured to be B(B→Xs+-)=(4.11±0.83(stat)-0.81+0. 85(syst))×10-6 for M+->0.2GeV/c2.

Original languageEnglish
Article number092005
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume72
Issue number9
DOIs
Publication statusPublished - 2005 Nov 1

All Science Journal Classification (ASJC) codes

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

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    Iwasaki, M., Itoh, K., Aihara, H., Abe, K., Abe, K., Adachi, I., Asano, Y., Aushev, T., Bahinipati, S., Bakich, A. M., Banerjee, S., Bedny, I., Bitenc, U., Bizjak, I., Blyth, S., Bondar, A., Bozek, A., Bračko, M., Brodzicka, J., ... Zürcher, D. (2005). Improved measurement of the electroweak penguin process B→Xs+-. Physical Review D - Particles, Fields, Gravitation and Cosmology, 72(9), [092005]. https://doi.org/10.1103/PhysRevD.72.092005