Measurement of exclusive baryon-antibaryon decays of {chi}{sub cJ} mesons

Journal Article · Fri Aug 01 04:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.78.031101· OSTI ID:21250571

Naik, P; Rademacker, J ^[1]; Asner, D M; Edwards, K W; Reed, J ^[2]; Briere, R A; Ferguson, T; Tatishvili, G; Vogel, H; Watkins, M E ^[3]; Rosner, J L ^[4]; Alexander, J P; Cassel, D G; Duboscq, J E; Ehrlich, R; Fields, L; Gibbons, L; Gray, R; Gray, S W; Hartill, D L ^[5]

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1. University of Bristol, Bristol BS8 1TL (United Kingdom)
2. Carleton University, Ottawa, Ontario, Canada K1S 5B6 (Canada)
3. Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States)
4. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)
5. Cornell University, Ithaca, New York 14853 (United States)

Using a sample of 2.59x10{sup 7} {psi}(2S) decays collected by the CLEO-c detector, we present results of a study of {chi}{sub cJ} (J=0, 1, 2) decays into baryon-antibaryon final states. We present the world's most precise measurements of the {chi}{sub cJ}{yields}pp and {chi}{sub cJ}{yields}{lambda}{lambda} branching fractions, and the first measurements of {chi}{sub c0} decays to other hyperons. These results illuminate the decay mechanism of the {chi}{sub c} states.

• OSTI ID: 21250571
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 78; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTIBARYONS
BARYONS
BRANCHING RATIO
CESR STORAGE RING
HYPERONS
MESONS
MULTIPARTICLE SPECTROMETERS
PARTICLE DECAY
PARTICLE IDENTIFICATION