Lifetimes of the Charmed ParticlesD±,F±, andΛc+Produced by Neutrinos

Autor: Jaebeom Park, R. A. Sidwell, K. Chiba, S. Conetti, M. Teranaka, M. Nakamura, Y. Maeda, I. A. Lovatt, Koji Nakazawa, D. Pitman, J. F. Martin, H. Shibuya, O. Kusumoto, G. Fujioka, M. Turcotte, K. Reibel, H. Fuchi, Yasuhiro Homma, Shigeki Tasaka, S. G. Frederiksen, K. Moriyama, N. R. Stanton, Y. Noguchi, C. Yokoyama, J. Trischuk, H. Okabe, J. Yamato, K. Hoshino, Motoaki Miyanishi, T. Hara, M. Gutzwiller, N. Ushida, K. Fujiwara, S. Tatsumi, M. Ohashi, C. O. Kim, S. Errede, J. M. Dunlea, Y. Takahashi, S. Kuramata, T. S. Yoon, J. Yokota, S. Y. Bahk, I. G. Park, H. Fukushima, N. W. Reay, T. Kondo, Y. Tsuzuki, C. J. D. Hébert, B. McLeod, J. S. Song, A. Gauthier, J.D. Prentice, K. Niu, Yasuhiro Tomita, Y. Yanagisawa, Kimio Niwa, H. Sasaki, D. C. Bailey, T. Okusawa, O. Yamakawa, R. Matsui, K. Taruma, P. Mercure, N. Torii, Gordon J. Aubrecht, Shigeki Aoki, K. Kodama, M. Kazuno, B. J. Stacey, J. Hebert, H. Shibata, G. A. Oleynik
Rok vydání: 1986
Předmět:
Zdroj: Physical Review Letters. 56:1767-1770
ISSN: 0031-9007
Popis: We report final results for the D/sup + -/, F/sup + -/, and ..lambda../sub c//sup +/ lifetimes measured with a hybrid emulsion spectrometer in the wide-band neutrino beam at Fermilab. In total, 3886 neutrino and antineutrino interactions were located in the fiducial volume of the emulsion. From these interactions we have unambiguously identified 6 F/sup + -/ and 13 ..lambda../sub c//sup +/ decays, for which the fitted lifetimes are tau(F/sup + -/) = (2.6/sub -0.9//sup +1.6/) x 10/sup -13/ s and tau(..lambda../sub c//sup +/) = (2.0/sub -0.5//sup +0./ 7) x 10/sup -13/ s. 28 other decays are consistent with a D/sup +/ or D/sup -/ hypothesis. From these events, we obtain a D/sup + -/ lifetime of (11.1/sub -2.9//sup +4.4/) x 10/sup -13/ s.
Databáze: OpenAIRE