First measurements of J/{psi} decays into {sigma}{sup +}{sigma}{sup -} and {xi}{sup 0}{xi}{sup 0}

Journal Article · Sat Nov 01 00:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.78.092005· OSTI ID:21254593

Ablikim, M; Bai, J Z; Bai, Y; Cai, X; Chen, H S; Chen, H X; Chen, J C; Chen, Jin; Chen, Y B; Chu, Y P; Deng, Z Y; Du, S X; Fang, J; Gao, C S; Gu, S D; Guo, Y N; He, K L; Heng, Y K; Hu, H M; Hu, T ^[1]

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1. Institute of High Energy Physics, Beijing 100049 (China)

Based on 58x10{sup 6} J/{psi} events collected with the BESII detector at the Beijing Electron-Positron Collider, the baryon pair processes J/{psi}{yields}{sigma}{sup +}{sigma}{sup -} and J/{psi}{yields}{xi}{sup 0}{xi}{sup 0} are observed for the first time. The branching fractions are measured to be B(J/{psi}{yields}{sigma}{sup +}{sigma}{sup -})=(1.50{+-}0.10{+-}0.22)x10{sup -3} and B(J/{psi}{yields}{xi}{sup 0}{xi}{sup 0})=(1.20{+-}0.12{+-}0.21)x10{sup -3}, where the first errors are statistical and the second ones are systematic.

• OSTI ID: 21254593
• Journal Information: Physical Review. D, Particles Fields, Vol. 78, Issue 9; Other Information: DOI: 10.1103/PhysRevD.78.092005; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

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