Study of decay J/Psi ->gamma gamma V(rho,phi)

Citation
Jz. Bai et al., Study of decay J/Psi ->gamma gamma V(rho,phi), HIGH EN P N, 24(10), 2000, pp. 892-900
Citations number
11
Language
CHINESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
ISSN journal
0254-3052 → ACNP
Volume
24
Issue
10
Year of publication
2000
Pages
892 - 900
Database
ISI
SICI code
0254-3052(200010)24:10<892:SODJ-G>2.0.ZU;2-9
Abstract
Based on 7.8 x 10(6) J/psi events collected by BES experiment, J/psi radiat ive decay J/psi-->gamma gamma V(rho, phi) have been studied. The eta(1430) resonance has been observed in these two channels respectively. Its mass,wi dth and branching ratio are 1431 +/- 17MeV, 88 +/- 28MeV, and Br (J/psi-->g amma eta(1430)) Br(eta(1430)-->gamma rho) = (1.1 +/- 0.5 +/- 0.3) x 10(-4) from J/psi-->gamma gamma rho mode,1424 +/- 15MeV, 73 +/- 58MeV, and Br(J/ps i-->gamma eta(1430)) Br(eta(1430)-->gamma phi) = (2.0 +/- 1.0 +/- 0.6) x 10 (-4) from J/psi-->gamma gamma phi mode.