Observation of two excited charmed baryons decaying into Lambda(c)+ pi+-
Collaboration
10 pages
Published in:
- Phys.Rev.Lett. 78 (1997) 2304-2308
Report number:
- CLNS-96-1427,
- CLEO-96-13,
- SLAC-PUB-9851
Experiments:
- CESR-CLEO-II
Citations per year
Abstract: (APS)
Using data recorded by the CLEO-II detector at CESR, we report evidence of a pair of excited charmed baryons, one decaying into Λc+π+ and the other into Λc+π−. The doubly charged state has a measured mass difference M(Λc+π+)−M(Λc+) of 234.5±1.1±0.8 MeV/c2 and a width of 17.9−3.2+3.8±4.0MeV/c2, and the neutral state has a measured mass difference M(Λc+π−)−M(Λc+) of 232.6±1.0±0.8 MeV/c2 and a width of 13.0−3.0+3.7±4.0MeV/c2. We interpret these data as evidence of the Σc*++ and Σc*0, the spin 32+ excitations of the Σc baryons.- electron positron: colliding beams
- electron positron: annihilation
- charmed baryon: electroproduction
- Sigma/c: excited state
- new particle: Sigma/c*
- charmed baryon: width
- mass difference: (charmed baryon Lambda/c+)
- multiplet: mass difference
- charmed baryon: hadronic decay
- angular distribution
References(24)
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