Measurements of χcJ→K+K−K+K− decays

Measurements of χcJ→K+K−K+K− decays

Using 14M ψ(2S) events taken with the BESII detector, χcJ→2(K+K−) decays are studied. For the four-kaon final state, the branching fractions are B(χc0,1,2→2(K+K−))=(3.48±0.23±0.47)×10−3, (0.70±0.13±0.10)×10−3, and (2.17±0.20±0.31)×10−3. For the ϕK+K− final state, the branching fractions, which are m...

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Veröffentlicht in:Physics letters. B 2006-11, Vol.642 (3), p.197-202
Hauptverfasser: Bai, J.Z., Chen, H.F., Chen, H.X., Chen, J.C., Chi, S.P., Chu, Y.P., Dai, Y.S., Diao, L.Y., Deng, Z.Y., Du, S.X., Fu, C.D., Gao, C.S., Gao, Y.N., Guo, Y.Q., He, K.L., He, M., Heng, Y.K., Hu, H.M., Huang, G.S., Huang, X.T., Ji, X.B., Jiang, X.Y., Jiao, J.B., Jin, Yi, Li, H.H., Li, R.Y., Li, S.M., Li, X.L., Li, X.N., Li, X.Q., Liang, Y.F., Liu, B.J., Liu, C.X., Liu, F., Liu, Fang, Liu, H.H., Liu, H.M., Liu, J., Liu, R.G., Liu, Z.A., Lu, G.R., Lu, J.G., Ma, F.C., Ma, H.L., Ma, L.L., Mo, X.H., Nie, J., Olsen, S.L., Peng, H.P., Ping, R.G., Qiu, J.F., Ren, Z.Y., Rong, G., Shan, L.Y., Shen, C.P., Shen, D.L., Shen, X.Y., Sun, H.S., Sun, Z.J., Varner, G.S., Wang, D.Y., Wang, L.L., Wang, L.S., Wang, M., Wang, P., Wang, W.F., Wang, Y.F., Wang, Z., Wang, Zheng, Wei, D.H., Wiedner, U., Xie, X.X., Xu, G.F., Xu, X.P., Xu, Y., Yan, M.L., Yang, Y.X., Yi, Z.Y., Yu, G.W., Yuan, C.Z., Yuan, Y., Zang, S.L., Zeng, Y., Zhang, B.X., Zhang, D.H., Zhang, J.W., Zhang, S.H., Zhang, X.M., Zhang, X.Y., Zhang, Yiyun, Zhang, Z.P., Zhao, J.W., Zheng, H.Q., Zheng, J.P., Zheng, Z.P., Zhou, L., Zhou, N.F., Zhu, Yingchun, Zhuang, X.A., Zou, B.S.
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Sprache:eng
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Exact sciences and technology
Nuclear physics
Physics
The physics of elementary particles and fields
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Zusammenfassung:Using 14M ψ(2S) events taken with the BESII detector, χcJ→2(K+K−) decays are studied. For the four-kaon final state, the branching fractions are B(χc0,1,2→2(K+K−))=(3.48±0.23±0.47)×10−3, (0.70±0.13±0.10)×10−3, and (2.17±0.20±0.31)×10−3. For the ϕK+K− final state, the branching fractions, which are measured for the first time, are B(χc0,1,2→ϕK+K−)=(1.03±0.22±0.15)×10−3, (0.46±0.16±0.06)×10−3, and (1.67±0.26±0.24)×10−4. For the ϕϕ final state, B(χc0,2→ϕϕ)=(0.94±0.21±0.13)×10−3 and (1.70±0.30±0.25)×10−3.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2006.09.040