0000000000223771

AUTHOR

N. G. Peresadko

showing 2 related works from this author

Measurement of charmed-particle lifetimes and decay branching ratios

1987

The lifetimes of charmed hadrons photoproduced in nuclear emulsion have been computed from a practically background-free sample of 44 neutral particle decays and 42 charged-particle decays including 27D±, 11Λc+, 1Ds+ and 3 ambiguous decays. The values obtained are τ(D0, bar D0) = (3.6-0.8+1.2 ± 0.7) 10-13 s, τ(D±) = (5.0-1.0+1.5 ± 1.9) 10-13 s, τ(Λc+) = = (2.3-0.6+0.9 ± 0.4) 10-13 s. Branching ratios of various decay topologies were also obtained.

Physics010308 nuclear & particles physicsHadronFísicaGeneral Physics and AstronomyBranching (polymer chemistry)01 natural sciencesNuclear physics0103 physical sciencesNuclear emulsionAtomic physics010306 general physicsNeutral particleParticle Physics - Experiment
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Cross sections and some features of charm photoproduction at gamma energies of 20-70 GeV

1987

Abstract We report some results on charm photoproduction at γ energies ranging from 20 to 70 GeV. 36 events with pairs of charmed particles have been found in emulsions. The computed total cross section is (230±57)nb/nucleon. Frequencies of different production channels and some distributions are presented and compared with the predictions from a photon-gluon fusion model with string fragmentation.

PhysicsNuclear and High Energy PhysicsParticle physics010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyNuclear TheoryFísica01 natural sciencesOmega3. Good healthNuclear physics0103 physical sciencesHigh Energy Physics::Experiment010306 general physicsNucleonNuclear ExperimentParticle Physics - Experiment
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