Conventional estimates are reviewed for charmed particle lifetimes. Free‐quark models give values of (a few) ×10−13 sec to (a few) ×10−12 sec. The shorter of these values also follows from an extrapolation based on D→ Keν. Possible differences among the lifetimes and production rates of D0, D+, F+, C0+, the heavy lepton τ, and the fifth quark b are discussed. Extreme values of mixing angles in a six‐quark model could extend charmed particle lifetimes by a factor of at most three from the above estimates, while shorter lifetimes than those predicted could occur for some species like D0 or F+ if their nonleptonic decays were enchanced. The predictions are discussed in the light of some current experimental results, and it is estimated that σ (pp→charm) ?10μb at 400 GeV/c.
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1 April 1979
Cosmic Rays and Particle Physics-1978: Bartol Conference
16-21 October 1976
Newark, DE, USA
Research Article|
April 01 1979
Charmed particle lifetimes
Jonathan L. Rosner
Jonathan L. Rosner
School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455
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AIP Conf. Proc. 49, 297–316 (1979)
Citation
Jonathan L. Rosner; Charmed particle lifetimes. AIP Conf. Proc. 1 April 1979; 49 (1): 297–316. https://doi.org/10.1063/1.31625
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