Upper limits for charm hadron decays to two muons plus hadrons

K. Kodama, N. Ushida, A. Mokhtarani, V. S. Paolone, J. T. Volk, J. O. Wilcox, P. M. Yager, R. M. Edelstein, A. P. Freyberger, D. B. Gibaut, R. J. Lipton, W. R. Nichols, D. M. Potter, J. S. Russ, C. Zhang, Y. Zhang, H. I. Jang, J. Y. Kim, T. I. Kim, I. T. LimM. Y. Pac, B. R. Baller, R. J. Stefanski, K. Nakazawa, K. S. Chung, S. H. Chung, D. C. Kim, I. G. Park, M. S. Park, J. S. Song, C. S. Yoon, M. Aryal, N. W. Reay, R. A. Sidwell, N. R. Stanton, M. Chikawa, T. Abe, T. Fujii, G. Fujioka, K. Fujiwara, H. Fukushima, T. Hara, Y. Takahashi, K. Taruma, Y. Tsuzuki, C. Yokoyama, S. D. Chang, B. G. Cheon, J. H. Cho, J. S. Kang, C. O. Kim, K. Y. Kim, T. Y. Kim, J. C. Lee, S. B. Lee, G. Y. Lim, S. W. Nam, T. S. Shin, K. S. Sim, J. K. Woo, Y. Isokane, Y. Tsuneoka, S. Aoki, A. Gauthier, K. Hoshino, H. Kitamura, M. Kobayashi, M. Komatsu, M. Miyanishi, K. Nakamura, M. Nakamura, Y. Nakamura, S. Nakanishi, K. Niu, K. Niwa, M. Nomura, K. Okada, H. Tajima, T. Toshitou, S. Yoshida, J. M. Dunlea, S. G. Frederiksen, S. Kuramata, B. G. Lundberg, G. A. Oleynik, K. Reibel, K. Moriyama, H. Shibata, G. R. Kalbfleisch, P. Skubic, J. M. Snow, S. E. Willis, O. Kusumoto, K. Nakamura, T. Okusawa, M. Teranaka, T. Tominaga, T. Yoshida, H. Yuuki, H. Okabe, J. Yokota, M. Kazuno, T. Koya, E. Niu, S. Ogawa, H. Shibuya, S. Watanabe, N. Yasuda, M. Kamiya, Y. Sato, I. Tezuka, M. Yamaki, S. Y. Bahk, S. K. Kim

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33 Citations (Scopus)

Abstract

A search for charm hadron decays into two muons plus one or more hadrons has been carried out using a hybrid emulsion spectrometer. This technique is sensitive to modes with missing neutrals, e.g. π0μ+μ- and ρ{variant}±μ+μ-, as well as to constrained modes having visible invariant masses equal to those of charm states. No evidence for any such decays has been found, which allows upper limits at the 90% confidence level as low as 1.8 × 10-4 to be placed on the branching fractions for charm-changing neutral-current and lepton-number violating decay modes.

Original languageEnglish
Pages (from-to)85-92
Number of pages8
JournalPhysics Letters B
Volume345
Issue number1
DOIs
Publication statusPublished - 1995 Feb 2

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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