Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9861311 | Physics Letters B | 2005 | 7 Pages |
Abstract
Using 14 million Ï(2S) events collected with the BESII detector, branching fractions of Ï(2S)âKâ(892)+Kâ+c.c. and Kâ(892)0K¯0+c.c. are determined to be: B(Ï(2S)âKâ(892)+Kâ+c.c.)=(2.9â1.7+1.3±0.4)Ã10â5 and B(Ï(2S)âKâ(892)0K¯0+c.c.)=(13.3â2.7+2.4±1.7)Ã10â5. The results confirm the violation of the “12% rule” for these two decay channels. A large isospin violation between the charged and neutral modes is observed.
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Authors
BES Collaboration BES Collaboration, M. Ablikim, J.Z. Bai, Y. Ban, J.G. Bian, X. Cai, J.F. Chang, H.F. Chen, H.S. Chen, H.X. Chen, J.C. Chen, Jin Chen, Jun Chen, M.L. Chen, Y.B. Chen, S.P. Chi, Y.P. Chu, X.Z. Cui, B.S. Zou,