Lifetimes of charmed particles produced in a 20-GeV p experiment

K. Abe*, T. C. Bacon, J. Ballam, L. Berny, A. V. Bevan, H. H. Bingham, J. E. Brau, D. Brick, W. M. Bugg, J. Butler, W. Cameron, J. T. Carroll, C. V. Cautis, J. S. Chima, H. O. Cohn, D. C. Colley, G. T. Condo, S. Dado, R. Diamond, P. J. DornanR. Erickson, T. Fieguth, R. C. Field, L. Fortney, B. Franek, N. Fujiwara, R. Gearhart, J. Goldberg, G. P. Gopal, A. T. Goshaw, E. S. Hafen, V. Hagopian, G. Hall, E. R. Hancock, T. Handler, H. J. Hargis, E. L. Hart, P. Haridas, K. Hasegawa, T. Hayashino, D. Q. Huang, R. I. Hulsizer, S. Isaacson, M. Jobes, G. E. Kalmus, D. P. Kelsey, J. Kent, T. Kitagaki, P. Lang, J. Lannutti, A. Levy, P. W. Lucas, W. A. Mann, T. Maruyama, M. MacDermott, R. Merenyi, R. Milburn, C. Milstene, K. C. Moffeit, J. J. Murray, A. Napier, S. Noguchi, F. Ochiai, S. O'Neale, A. P.T. Palounek, I. A. Pless, M. Rabin, P. Rankin, W. J. Robertson, A. H. Rogers, E. Ronat, H. Rudnicka, T. Sato, J. Schneps, J. Shank, A. M. Shapiro, C. Sinclair, R. Sugahara, A. Suzuki, K. Takahashi, K. Tamai, S. Tanaka, S. Tether, H. B. Wald, W. D. Walker, M. Widgoff, C. G. Wilkins, S. Wolbers, C. A. Woods, Y. Wu, A. Yamaguchi, R. K. Yamamoto, S. Yamashita, G. Yekutieli, Y. Yoshimura, G. P. Yost, H. Yuta

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Eleven neutral and nine charged decays of charmed particles have been observed in a sample of 205 000 hadronic interactions in a 1.2-million-picture exposure of the SLAC Hybrid Facility bubble chamber to a 20-GeV/c backward-scattered laser beam. The charged and neutral lifetimes were determined to be 8.2-2.5+4.5×10-13 and 6.7-2.0+3.5×10-13 sec, respectively, with a ratio of 1.2-0.50.9.

Original languageEnglish
Pages (from-to)1526-1529
Number of pages4
JournalPhysical Review Letters
Issue number22
StatePublished - 1982


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