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Title: Charmed particle lifetimes. [Review, six quark model]

Abstract

Conventional estimates are reviewed for charmed particle lifetimes. Free-quark models give values of (a few) x 10/sup -13/ sec to (a few) x 10/sup -12/ sec. The shorter of these values also follows from an extrapolation based on D ..-->.. Ke/sup nu/. Possible differences among the lifetimes and production rates of D/sup 0/, D/sup +/, F/sup +/, C/sub 0//sup +/, the heavy lepton tau, 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 D/sup 0/ or F/sup +/ if their nonleptonic decays were enhanced. The predictions are discussed in the light of some current experimental results, and it is estimated that sigma(pp ..-->.. charm) approx. = 10 ..mu..b at 400 GeV/c. 95 references.

Authors:
Publication Date:
Research Org.:
Minnesota Univ., Minneapolis (USA). School of Physics and Astronomy
OSTI Identifier:
5896179
Report Number(s):
COO-1764-358
TRN: 79-021056
DOE Contract Number:  
EY-76-C-02-1764
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CHARM PARTICLES; LIFETIME; CHARMED MESON RESONANCES; D RESONANCES; D-1865 RESONANCES; PROTON-PROTON INTERACTIONS; PARTICLE PRODUCTION; QUARKS; TAU PARTICLES; CONFIGURATION MIXING; CROSS SECTIONS; QUARK MODEL; REVIEWS; BARYON-BARYON INTERACTIONS; BOSONS; COMPOSITE MODELS; DOCUMENT TYPES; ELEMENTARY PARTICLES; FERMIONS; HADRON-HADRON INTERACTIONS; HADRONS; HEAVY LEPTONS; INTERACTIONS; LEPTONS; MATHEMATICAL MODELS; MESON RESONANCES; MESONS; NUCLEON-NUCLEON INTERACTIONS; PARTICLE INTERACTIONS; PARTICLE MODELS; POSTULATED PARTICLES; PROTON-NUCLEON INTERACTIONS; RESONANCE PARTICLES; 645204* - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions & Properties; 645205 - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions, Baryon No. = 0- (-1987); 645206 - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions, Baryon No. = 1- (-1987); 645203 - High Energy Physics- Particle Interactions & Properties-Theoretical- Weak Interactions & Properties

Citation Formats

Rosner, J L. Charmed particle lifetimes. [Review, six quark model]. United States: N. p., 1979. Web. doi:10.2172/5896179.
Rosner, J L. Charmed particle lifetimes. [Review, six quark model]. United States. https://doi.org/10.2172/5896179
Rosner, J L. Mon . "Charmed particle lifetimes. [Review, six quark model]". United States. https://doi.org/10.2172/5896179. https://www.osti.gov/servlets/purl/5896179.
@article{osti_5896179,
title = {Charmed particle lifetimes. [Review, six quark model]},
author = {Rosner, J L},
abstractNote = {Conventional estimates are reviewed for charmed particle lifetimes. Free-quark models give values of (a few) x 10/sup -13/ sec to (a few) x 10/sup -12/ sec. The shorter of these values also follows from an extrapolation based on D ..-->.. Ke/sup nu/. Possible differences among the lifetimes and production rates of D/sup 0/, D/sup +/, F/sup +/, C/sub 0//sup +/, the heavy lepton tau, 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 D/sup 0/ or F/sup +/ if their nonleptonic decays were enhanced. The predictions are discussed in the light of some current experimental results, and it is estimated that sigma(pp ..-->.. charm) approx. = 10 ..mu..b at 400 GeV/c. 95 references.},
doi = {10.2172/5896179},
url = {https://www.osti.gov/biblio/5896179}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {1}
}