Observation of {chi}{sub cJ} Radiative Decays to Light Vector Mesons

Journal Article · Fri Oct 10 04:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.101.151801· OSTI ID:21179792

Bennett, J V; Mitchell, R E; Shepherd, M R ^[1]; Besson, D ^[2]; Pedlar, T K ^[3]; Cronin-Hennessy, D; Gao, K Y; Hietala, J; Kubota, Y; Klein, T; Lang, B W; Poling, R; Scott, A W; Zweber, P ^[4]; Dobbs, S; Metreveli, Z; Seth, K K; Tan, B J. Y.; Tomaradze, A ^[5]; Libby, J ^[6]

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1. Indiana University, Bloomington, Indiana 47405 (United States)
2. University of Kansas, Lawrence, Kansas 66045 (United States)
3. Luther College, Decorah, Iowa 52101 (United States)
4. University of Minnesota, Minneapolis, Minnesota 55455 (United States)
5. Northwestern University, Evanston, Illinois 60208 (United States)
6. University of Oxford, Oxford OX1 3RH (United Kingdom)

Using a total of 2.74x10{sup 7} decays of the {psi}(2S) collected with the CLEO-c detector, we present a study of {chi}{sub cJ}{yields}{gamma}V, where V={rho}{sup 0}, {omega}, {phi}. The transitions {chi}{sub c1}{yields}{gamma}{rho}{sup 0} and {chi}{sub c1}{yields}{gamma}{omega} are observed with B({chi}{sub c1}{yields}{gamma}{rho}{sup 0})=(2.43{+-}0.19{+-}0.22)x10{sup -4} and B({chi}{sub c1}{yields}{gamma}{omega})=(8.3{+-}1.5{+-}1.2)x10{sup -5}. In the {chi}{sub c1}{yields}{gamma}{rho}{sup 0} transition, the final state meson is dominantly longitudinally polarized. Upper limits on the branching fractions of other {chi}{sub cJ} states to light vector mesons are presented.

• OSTI ID: 21179792
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 15 Vol. 101; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
CESR STORAGE RING
GAMMA RADIATION
HADRONIC PARTICLE DECAY
MULTIPARTICLE SPECTROMETERS
OMEGA BARYONS
PARTICLE IDENTIFICATION
PHI MESONS
PHOTONS
RADIATIVE DECAY
RHO-770 MESONS
VECTOR MESONS