0000000001131022

AUTHOR

M. M. Chernyavski

showing 2 related works from this author

Measurement of the Lifetime of Neutral Charmed Mesons

1984

Abstract The lifetime of neutral charmed particles photoproduced in emulsion has been measured. The lifetime value presented here was obtained from a sample of 22D 0 mesons, 18 of which have their charmed partner seen in emulsion. The sample is essentially background-free. The result obtained is τ D 0 =(2.11 +1.21 -0.63 )×10 13 s The D 0 mass derived from 8 3C events is m D 0 = 1856 ± 36 MeV/ c 2 .

Nuclear physicsPhysicsNuclear and High Energy PhysicsParticle physicsMeson010308 nuclear & particles physics0103 physical sciencesEmulsionFísica010306 general physics01 natural sciencesSample (graphics)Particle Physics - Experiment
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Charged charmed particle lifetime

1984

Abstract We present the lifetime values obtained for D ± and Λ c + , photoproduced in nuclear emulsion in the WA58 experiment. In photohadronic interactions, pairs of charmed particles are produced. Out of 20 charged charmed particles used for lifetime evaluation, 17 have their charmed partner seen emulsion, being then essentially free from any background. The values of the lifetime are τ D ± = (3.91 −1.25 +2.35 ) × 10 −13 s, τ Λ c + = (2.22 −0.75 +1.34 ) × 10 −13 s.

Nuclear physicsPhysicsNuclear and High Energy Physics010308 nuclear & particles physics0103 physical sciencesEmulsionParticleFísicaNuclear emulsion010306 general physics01 natural sciencesOmegaParticle Physics - Experiment
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