Passer à la navigation principale Passer à la recherche Passer au contenu principal

Measurement of B(Ds+→μ+νμ)

  • L. Widhalm
  • , I. Adachi
  • , H. Aihara
  • , T. Aushev
  • , A. M. Bakich
  • , V. Balagura
  • , E. Barberio
  • , A. Bay
  • , I. Bedny
  • , V. Bhardwaj
  • , U. Bitenc
  • , S. Blyth
  • , A. Bozek
  • , M. Bračko
  • , J. Brodzicka
  • , T. E. Browder
  • , Y. Chao
  • , A. Chen
  • , W. T. Chen
  • , B. G. Cheon
  • R. Chistov, I. S. Cho, Y. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, P. Goldenzweig, B. Golob, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, J. H. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, R. Kumar, C. C. Kuo, Y. Kuroki, A. Kuzmin, Y. J. Kwon, J. Lee, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, S. W. Lin, C. Liu, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, W. Mitaroff, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, K. S. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, R. Seidl, A. Sekiya, K. Senyo, M. Shapkin, H. Shibuya, J. G. Shiu, J. B. Singh, A. Somov, S. Stanič, M. Starič, T. Sumiyoshi, S. Y. Suzuki, F. Takasaki, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. Vervink, C. H. Wang, M. Z. Wang, P. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, Z. P. Zhang, V. Zhilich, A. Zupanc, O. Zyukova
  • Institut für Hochenergiephysik
  • High Energy Accelerator Research Organization (KEK)
  • University of Tokyo
  • Institute for Theoretical and Experimental Physics
  • ENAC-IIC-GEL
  • University of Sydney
  • University of Melbourne
  • Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
  • Panjab University
  • Department of Biochemistry and Molecular and Structural Biology
  • National United University Taiwan
  • Institute for Nuclear Physics
  • University of Maribor
  • University of Hawaii
  • National Taiwan University
  • National Central University
  • Hanyang University
  • Yonsei University
  • Sungkyunkwan University
  • Virginia Polytechnic Institute and State University
  • University of Cincinnati
  • University of Ljubljana
  • Korea University
  • Nagoya University
  • Nara Women's University
  • Osaka University
  • Tohoku Gakuin University
  • Kyungpook National University
  • Saga University
  • Tokyo Institute of Technology
  • Chiba University
  • Niigata University
  • Seoul National University
  • The Graduate University for Advanced Studies
  • University of Science and Technology of China
  • Osaka City University
  • Tokyo University of Agriculture and Technology
  • Toho University
  • Kanagawa University
  • University of Illinois at Urbana-Champaign
  • Riken BNL Research Center
  • Kurchatov Institute
  • University of Nova Gorica
  • Tokyo Metropolitan University
  • Institute of High Energy Physics, Chinese Academy of Sciences
  • Tohoku University
  • Nippon Dental University

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

Résumé

We present a measurement of the branching fraction B(Ds+→μ+νμ ) using a 548fb-1 data sample collected by the Belle experiment at the KEKB e+e- collider. The Ds momentum is determined by reconstruction of the system recoiling against DKγX in events of the type e+e-→Ds*DKX, Ds*→Dsγ, where X represents additional pions or photons from fragmentation. This full-reconstruction method provides high resolution in the neutrino momentum and thus good background separation, equivalent to that achieved by experiments at the tau-charm factories. We obtain the branching fraction B(Ds+→μ+νμ)=[6.44±0.76(stat)±0.57(syst)] ×10-3, implying a Ds decay constant of fDs=[275±16(stat) ±12(syst)]MeV.

langue originaleAnglais
Numéro d'article241801
journalPhysical Review Letters
Volume100
Numéro de publication24
Les DOIs
étatPublié - 17 juin 2008
Modification externeOui

Empreinte digitale

Examiner les sujets de recherche de « Measurement of B(Ds+→μ+νμ) ». Ensemble, ils forment une empreinte digitale unique.

Contient cette citation