On the Lifetime of Charged Charmed Particles: First Direct Observation of a Charmed Baryon Decay

Angelini, C.; Bagnaia, P.; Baroni, G.; Bartley, J.H.; Bertrand-Coremans, G.; Bisi, V.; Breslin, A.; Burhop, E.H.S.; Carena, F.; Casali, R.

doi:10.1016/0370-2693(79)90671-3

On the Lifetime of Charged Charmed Particles: First Direct Observation of a Charmed Baryon Decay

Ankara-Brussels-CERN-Dublin-London-Open U.-Pisa-Rome-Turin

Collaboration

Jun, 1979

6 pages

Published in:

Phys.Lett.B 84 (1979) 150

Published: 1979

DOI:

10.1016/0370-2693(79)90671-3

Report number:

PRINT-79-0504 (PISA),
CERN-EP-79-44

Experiments:

CERN-WA-017

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Abstract: (Elsevier)

Two new examples of production by neutrinos and subsequent decay of charged charmed hadrons are reported. Together with two similar events reported previously they show that the lifetime of charged charmed particles is in the neighbourhood of 5 × 10 −13 s, as expected from current theoretical models. One of the new events is identified as a baryon λ c + of mass 2.295 ± 0.015 GeV/c 2 which undergoes the decay process λ c + → p π + K − with a proper decay time (7.3 ± 0.1) × 10 −13 s.

NEUTRINO NUCLEUS: INELASTIC SCATTERING
INELASTIC SCATTERING: NEUTRINO NUCLEUS
CHARMED BARYON: SEARCH FOR
LAMBDA/C+: NEUTRINOPRODUCTION
NEUTRINOPRODUCTION: LAMBDA/C+
LAMBDA/C+: NONLEPTONIC DECAY
NONLEPTONIC DECAY: LAMBDA/C+
LAMBDA/C+: LIFETIME
NUCLEAR EMULSION
BUBBLE CHAMBER(HEAVY LIQUID): EXPERIMENTAL RESULTS

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