Study of Charged {kappa} Particle in J/{psi}{yields}K{sup {+-}K}{sub S{pi}}{sup {+-}{pi}0}

Journal Article · Thu Aug 05 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3483382· OSTI ID:21426445

Chengping, Shen ^[1]

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1. University of Hawaii, Honolulu, Hawaii 96822 (United States)

Based on a J/{psi} data sample of 58x10{sup 6} events at BESII, the decay of J/{psi}{yields}K{sup {+-}K}{sub S{pi}}{sup {+-}{pi}0} is studied. A low mass enhancement is visible in the sum of the K{sub S{pi}}{sup {+-}}and K{sup {+-}{pi}0} invariant mass spectra recoiling against K*(892){sup {+-}}. Partial wave analysis of this channel favors this low mass enhancement being a charged {kappa} particle with J{sup P} = 0{sup +} and with its pole locating at (849{+-}77{sub -14}{sup +18})-i(256{+-}40{sub -22}{sup +46}) MeV/c{sup 2} using a constant width Breit-Wigner. Also observed is J/{psi}{yields}K*(892){sup +}K*(892){sup -} with a branching fraction of (1.00{+-}0.19{sub -0.32}{sup +0.11})x10{sup -3}. All the above results are preliminary.

• OSTI ID: 21426445
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1257; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

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