1. Observation of D+ → ρ(770)0μ+v
- Author
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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.C. Russ, C. Zhang, Y. Zhang, H.I. Jang, J.Y. Kim, T.I. Kim, I.T. Lim, M.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. Chikawa, T. Abe, S. Aoki, 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, 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, M. Aryal, J.M. Dunlea, S.G. Frederiksen, S. Kuramata, B.G. Lundberg, G.A. Oleynik, N.W. Reay, K. Reibel, R.A. Sidwell, N.R. Stanton, K. Moriyama, H. Shibata, G.R. Kalbfleisch, P. Skubic, J.M. Smow, S.E. Willis, O. Kusumoto, S. Ohashi, T. Okusawa, M. Teranaka, T. Tominaga, T. Yoshida, H. Yuuki, H. Okabe, J. Yokota, S. Ikegami, M. Kazuno, T. Koya, E. Niu, S. Ogawa, H. Shibuya, S. Watanabe, N. Yasuda, Y. Sato, M. Seshimo, I. Tezuka, S.Y. Bahk, and S.K. Kim
- Subjects
Physics ,Semileptonic decay ,Nuclear and High Energy Physics ,Particle physics ,Rho meson ,Muon ,D meson ,Analytical chemistry ,Elementary particle ,lcsh:Physics ,lcsh:QC1-999 - Abstract
We report the first observation of the Cabibo disfavored semileptonic decay mode D+ → ρ(770)0 μ+v and measure its decay rate relative to the Cabibbo favored mode D + → K ∗ (892) 0 μ + v to be Λ(D + → ρ(770) 0 μ + v Λ(D + → K ∗ (892) 0 μ + v) = 0.044 0.031 −0.025 ( stat. ) ± 0.014 ( syst. ) . The results are compared to theoretical predictions and to previous experimental upper limits.
- Published
- 1993