Charmonium Decays to Axial-Vector Plus Pseudoscalar Mesons
Journal Article
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· Physical Review Letters
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- Institute of High Energy Physics, Beijing 100039, People`s Republic of (China)
- California Institute of Technology, Pasadena, California 91125 (United States)
- Colorado State University, Fort Collins, Colorado 80523 (United States)
- Hangzhou Unv., Hangzhou 310028, People`s Republic of (China)
- Peking Unv. (China)
A sample of 3.79{times}10{sup 6} {psi}(2S) events is used to study the decays of charmonium to axial-vector plus pseudoscalar mesons. The branching fraction for the decay {psi}(2S){r_arrow}b{sup {plus_minus}}{sub 1} (1235){pi}{sup {minus_plus}} agrees with expectations based on scaling the corresponding J/{psi} branching fraction. Flavor-SU(3)-violating K{sub 1}(1270) -K{sub 1}(1400) asymmetries with opposite character for {psi}(2S) and J/{psi} decays are observed. This contrasting behavior cannot be accommodated by adjustments of the singlet-triplet mixing angle. {copyright} {ital 1999} {ital The American Physical Society}
- OSTI ID:
- 698879
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 10 Vol. 83; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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