New results for the lifetimes of the D±, F±, and Λc+ particles

N. Ushida, T. Kondo, G. Fujioka, H. Fukushima, Y. Takahashi, S. Tatsumi, C. Yokoyama, Y. Homma, Y. Tsuzuki, S. Y. Bahk, C. O. Kim, J. N. Park, J. S. Song, D. Bailey, S. Conetti, J. Fischer, J. Trischuk, H. Fuchi, K. Hoshino, M. MiyanishiK. Niu, K. Niwa, H. Shibuya, Y. Yanagisawa, S. Errede, M. Gutzwiller, S. Kuramata, N. W. Reay, K. Reibel, T. A. Romanowski, R. Sidwell, N. R. Stanton, K. Moriyama, H. Shibata, T. Hara, O. Kusumoto, Y. Noguchi, M. Teranaka, H. Okabe, J. Yokota, J. Harnois, C. Hebert, J. Hebert, S. Lokanathan, B. McLeod, S. Tasaka, P. J. Davis, J. F. Martin, D. Pitman, J. D. Prentice, P. Sinervo, T. S. Yoon, H. Kimura, Y. Maeda

Research output: Contribution to journalArticlepeer-review


In an experiment measuring charmed-particle lifetimes with use of a hybrid-emulsion spectrometer in the wide-band neutrino beam at the Fermi National Accelerator Laboratory, 1248 neutrino and antineutrino interactions have been located. Twenty-three charged charm decay candidates have been reconstructed, from which we determine the lifetime of the D± to be 11.5-3.5+7. 5 × 10-3 s, that of the F± to be 1.9-0. 7+1. 3 × 10-13 s, and that of the Λc+ to be 2.3-0. 6+1. 0 × 10-13 s.

Original languageEnglish (US)
Pages (from-to)2362-2365
Number of pages4
JournalPhysical review letters
Issue number26
StatePublished - 1983
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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