6533b7d4fe1ef96bd1261e90

RESEARCH PRODUCT

Measurement of charmed-particle lifetimes and decay branching ratios

B. WillotV. CastilloM. M. ChernyavskyJ. LoryA. M. CartacciG. Diambrini-palazziA. MarchionniR. GessaroliA. Quareni-vignudelliTsai ChuA. ContiN. G. PeresadkoE. VillarA. LopezN. A. SalmanovaE. HigonS. TentindoBianca OsculatiA. RuizA. ForinoM. I. AdamovichF. ViaggiG. TomasiniR. LlosaV. G. LarionovaM. I. TretyakovaR. NiembroG. Di CaporiaccoD. SchuneJosé SaltL. BravoM. A. SanchisJ.j. GarciaS. P. KharlamovG. ParriniS. G. GerassimovMario SanninoG. VanderhaegheG. I. OrlovaM. DameriJ. M. BoltaYu. AlexandrovB. MonteleoniM. G. Dagliana

subject

Physics010308 nuclear & particles physicsHadronFísicaGeneral Physics and AstronomyBranching (polymer chemistry)01 natural sciencesNuclear physics0103 physical sciencesNuclear emulsionAtomic physics010306 general physicsNeutral particleParticle Physics - Experiment

description

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.

yearjournalcountryeditionlanguage
1987-01-01
https://hal.in2p3.fr/in2p3-00006721