Study of the hadronic decays of X-c states - art. no. 072001

Authors
Citation
Jz. Bai et al., Study of the hadronic decays of X-c states - art. no. 072001, PHYS REV D, 6007(7), 1999, pp. 2001
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW D
ISSN journal
0556-2821 → ACNP
Volume
6007
Issue
7
Year of publication
1999
Database
ISI
SICI code
0556-2821(19991001)6007:7<2001:SOTHDO>2.0.ZU;2-4
Abstract
Hadronic decays of the P-wave spin-triplet charmonium states chi(cJ)(J=0,1, 2) are studied using a sample of psi(2S) decays collected by the BES detect or operating at the BEPC storage ring. Branching fractions for the decays c hi(cl)-->(KSK+)-K-0 pi(-) + c.c., chi(c0)-->(KSKS0)-K-0, chi(c2)-->(KSKS0)- K-0, chi(c0)-->phi phi, chi(c2)-->phi phi and chi(cJ)-->K+K-K+K- are measur ed for the first time, and those for chi(cJ)-->pi(+)pi(-)pi(+) pi(-), chi(c J)-->pi(+)pi(-)K(+)K(-), chi(cJ)--> pi(+) pi(-) <p(p)over bar > and chi(cJ) -->3(pi(+) pi(-)) are measured with improved precision. In addition, we de termine the masses of the chi(c0) and eta(c) to be M chi(c0) = 3414.1+/-0.6 (stat)+/-0.8(syst) MeV and M eta(c) = 2975.8+/-3.9(stat)+/-1.2(syst) MeV. [ S0556-2821(99)01119-4].