Charmonium Decays to Axial-Vector Plus Pseudoscalar Mesons

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 correspon...

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Veröffentlicht in:	Physical Review Letters 1999-09, Vol.83 (10), p.1918-1921
Hauptverfasser:	Bai, J. Z., Ban, Y., Bian, J. G., Blum, I., Chen, G. P., Chen, H. F., Chen, J., Chen, J. C., Chen, Y., Chen, Y. B., Chen, Y. Q., Cheng, B. S., Cui, X. Z., Ding, H. L., Dong, L. Y., Du, Z. Z., Dunwoodie, W., Gao, C. S., Gao, M. L., Gao, S. Q., Gratton, P., Gu, J. H., Gu, S. D., Gu, W. X., Gu, Y. F., Guo, Y. N., Han, S. W., Han, Y., Harris, F. A., He, J., He, J. T., He, K. L., He, M., Hitlin, D. G., Hu, G. Y., Hu, H. M., Hu, J. L., Hu, Q. H., Hu, T., Hu, X. Q., Huang, Y. Z., Izen, J. M., Jiang, C. H., Jin, Y., Jones, B. D., Ke, Z. J., Kelsey, M. H., Kim, B. K., Kong, D., Lai, Y. F., Lang, P. F., Lankford, A., Li, C. G., Li, D., Li, H. B., Li, J., Li, P. Q., Li, R. B., Li, W., Li, W. G., Li, X. H., Li, X. N., Liu, H. M., Liu, J., Liu, R. G., Liu, Y., Lou, X. C., Lowery, B., Lu, F., Lu, J. G., Luo, X. L., Ma, E. C., Ma, J. M., Malchow, R., Mao, H. S., Mao, Z. P., Meng, X. C., Nie, J., Olsen, S. L., Oyang, J., Paluselli, D., Pan, L. J., Panetta, J., Porter, F., Qi, N. D., Qi, X. R., Qian, C. D., Qiu, J. F., Qu, Y. H., Que, Y. K., Rong, G., Schernau, M., Shao, Y. Y., Shen, B. W., Shen, D. L., Shen, H., Shen, X. Y., Sheng, H. Y., Shi, H. Z., Song, X. F.
Format:	Artikel
Sprache:	eng
Schlagworte:	AXIAL VECTOR MESONS BRANCHING RATIO CHARMONIUM FLAVOR MODEL J PSI-3097 MESONS KAONS KAONS MINUS KAONS PLUS PARTICLE DECAY PHYSICS PIONS PIONS MINUS PIONS PLUS PSEUDOSCALAR MESONS SCALING LAWS SU-3 GROUPS
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Zusammenfassung:	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}
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.83.1918