Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8198016 | Physics Letters B | 2006 | 8 Pages |
Abstract
Results are presented on J/Ï radiative decays to Ï+Ïâ and Ï0Ï0 based on a sample of 58M J/Ï events taken with the BES II detector. Partial wave analyses are carried out using the relativistic covariant tensor amplitude method in the 1.0 to 2.3GeV/c2ÏÏ mass range. There are conspicuous peaks due to the f2(1270) and two 0++ states in the 1.45 and 1.75 GeV/c2 mass regions. The first 0++ state has a mass of 1466±6±20MeV/c2, a width of 108â11+14±25MeV/c2, and a branching fraction B(J/Ïâγf0(1500)âγÏ+Ïâ)=(0.67±0.02±0.30)Ã10â4. Spin 0 is strongly preferred over spin 2. The second 0++ state peaks at 1765â3+4±13MeV/c2 with a width of 145±8±69MeV/c2. If this 0++ is interpreted as coming from f0(1710), the ratio of its branching fractions to ÏÏ and KK¯ is 0.41â0.17+0.11.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
BES Collaboration BES Collaboration, M. Ablikim, J.Z. Bai, Y. Ban, J.G. Bian, X. Cai, H.F. Chen, H.S. Chen, H.X. Chen, J.C. Chen, Jin Chen, Y.B. Chen, S.P. Chi, Y.P. Chu, X.Z. Cui, Y.S. Dai, L.Y. Diao, Z.Y. Deng, B.S. Zou,