Spectra of prompt electrons from decays of B+ and B0 mesons and ratio of inclusive semielectronic branching fractions

T. Okabe, K. Abe, K. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aushev, A. M. Bakich, Y. Ban, S. Banerjee, A. Bay, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. BrodzickaT. E. Browder, Y. Chao, A. Chen, K. F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S. K. Choi, Y. Choi, Y. K. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, A. Go, G. Gokhroo, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, J. H. Kim, S. M. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Krokovny, C. C. Kuo, Y. J. Kwon, J. S. Lange, S. E. Lee, S. H. Lee, T. Lesiak, J. Li, A. Limosani, S. W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyake, H. Miyata, R. Mizuk, D. Mohapatra, G. R. Moloney, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Palka, C. W. Park, H. Park, K. S. Park, N. Parslow, R. Pestotnik, L. E. Piilonen, M. Rozanska, H. Sagawa, Y. Sakai, T. R. Sarangi, T. Schietinger, O. Schneider, J. Schümann, C. Schwanda, S. Semenov, R. Seuster, M. E. Sevior, H. Shibuya, J. B. Singh, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, O. Tajima, F. Takasaki, N. Tamura, M. Tanaka, Y. Teramoto, X. C. Tian, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, S. Uno, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, M. Z. Wang, M. Watanabe, Y. Watanabe, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Heyoung Yang, J. Ying, Y. Yusa, J. Zhang, L. M. Zhang, Z. P. Zhang, V. Zhilich, D. Žontar

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We present spectra of prompt electrons from decays of neutral and charged B mesons. The results are based on 140 fb-1 of data collected by the Belle detector on the Υ(4S) resonance at the KEKB e+e - asymmetric collider. We tag Υ(4S)→BB̄ events by reconstructing a B meson in one of several hadronic decay modes; the semileptonic decay of the other B meson is inferred from the presence of an identified electron. We obtain for charged and neutral B mesons the partial rates of semileptonic decay, to electrons with momentum greater than 0.6 GeV/c in the B rest frame, and their ratio b+/b0=1.08±0. 05±0.02, where the first and second errors are statistical and systematic, respectively.

Original languageEnglish
Pages (from-to)27-36
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume614
Issue number1-2
DOIs
Publication statusPublished - May 12 2005

Keywords

  • B decay
  • Inclusive
  • Semileptonic

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint Dive into the research topics of 'Spectra of prompt electrons from decays of B<sup>+</sup> and B<sup>0</sup> mesons and ratio of inclusive semielectronic branching fractions'. Together they form a unique fingerprint.

  • Cite this

    Okabe, T., Abe, K., Abe, K., Adachi, I., Aihara, H., Akatsu, M., Asano, Y., Aushev, T., Bakich, A. M., Ban, Y., Banerjee, S., Bay, A., Bedny, I., Bitenc, U., Bizjak, I., Blyth, S., Bondar, A., Bozek, A., Bračko, M., ... Žontar, D. (2005). Spectra of prompt electrons from decays of B+ and B0 mesons and ratio of inclusive semielectronic branching fractions. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 614(1-2), 27-36. https://doi.org/10.1016/j.physletb.2005.03.060