Akademska digitalna zbirka SLovenije - logo
E-viri
Recenzirano Odprti dostop
  • Cross section measurements ...
    Achasov, M. N.; Ahmed, S.; Amoroso, A.; An, F. F.; Balossino Balossino, I.; Bennett, J. V.; Cai, X.; Calcaterra, A.; Chang, J. F.; Chen, H. S.; Cui, X. F.; Dai, H. L.; De Mori, F.; Fava, L.; Felici, G.; Fritsch, M.; Gao, Z.; Goetzen, K.; Gong, L.; Gong, W. X.; Gu, Y. T.; Guo, R. P.; Hao, X. Q.; He, K. L.; Himmelreich, M.; Hu, Y.; Irshad, M.; Ji, X. L.; Jiang, H. L.; Johansson, T.; Kang, X. S.; Kappert, R.; Khoukaz, A.; Koch, L.; Kuessner, M.; Kühn, W.; Li, H. J.; Li, P. L.; Li, W. D.; Liang, Y. T.; Liao, G. R.; Liu, Huanhuan; Liu, K. Y.; Liu, X.; Liu, Y. B.; Liu, Z. A.; Lu, J. D.; Luo, C. L.; Luo, M. X.; Lyu, X. R.; Ma, F. C.; Ma, L. L.; Maldaner, S.; Mangoni, A.; Meng, Z. X.; Muchnoi, N. Yu; Papenbrock, M.; Patteri, P.; Pelizaeus, M.; Qi, M.; Qi, T. Y.; Qian, S.; Qin, N.; Qin, X. P.; Rashid, K. H.; Rodin, V.; Shao, M.; Shen, P. X.; Sun, G. X.; Sun, Y. J.; Sun, Z. J.; Uman, I.; Wang, C. W.; Wang, D. Y.; Wang, H. H.; Wang, L. S.; Wang, M.; Wang, Z. H.; Wang, Y.; Wang, Z.; Xiao, Y. J.; Xu, W.; Yang, R. X.; Yang, Y. X.; Ye, M.; Ye, M. H.; You, Z. Y.; Zhang, B. Y.; Zhang, H. Y.; Zhang, X. Y.; Zhang, Y. T.; Zhang, Z. H.; Zhao, G.; Zhao, J. W.; Zhao, J. Z.; Zhao, Y. B.; Zheng, J. P.; Zhu, A. N.; Zhu, X. L.; Zhu, Y. C.

    Physical review. D, 08/2019, Letnik: 100, Številka: 3
    Journal Article

    We measure the Born cross sections of the process e+e−→K+K−K+K− at center-of-mass (c.m.) energies, s, between 2.100 and 3.080 GeV. The data were collected using the BESIII detector at the BEPCII collider. An enhancement at s=2.232  GeV is observed, very close to the e+e−→ΛΛ¯ production threshold. A similar enhancement at the same c.m. energy is observed in the e+e−→ϕK+K− cross section. The energy dependence of the K+K−K+K− and ϕK+K− cross sections differs significantly from that of e+e−→ϕπ+π−.