Precision Measurement of the e + e − → Λ c + Λ ¯ c − Cross Section Near Threshold

The cross section of the e+e−→Λc+Λ¯c− process is measured with unprecedented precision using data collected with the BESIII detector at /¯s=4574.5, 4580.0, 4590.0 and 4599.5 MeV. The nonzero cross section near the Λc+Λ¯c− production threshold is cleared. At center-of-mass energies /¯s=4574.5 and 459...

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Published in:	Physical review letters 2018-03, Vol.120 (13), p.1, Article 132001
Main Authors:	Achasov, M. N., Ahmed, S., Amoroso, A., Bai, J. Z., Bennett, D. W., Bennett, J. V., Cai, X., Calcaterra, A., Chai, J., Chen, P. L., Cibinetto, G., Dai, H. L., Dbeyssi, A., Ding, Y., Dou, Z. L., Fang, Y., Farinelli, R., Felici, G., Gao, Z., Greco, M., Gu, M. H., Harris, F. A., He, X. Q., Heng, Y. K., Hou, Z. L., Huang, G. S., Huang, X. T., Huang, X. Z., Ji, Q. P., Ji, X. B., Jiao, J. B., Jin, D. P., Kuemmel, M., Kuhlmann, M., Lange, J. S., Larin, P., Li, H. J., Li, J. W., Li, Ke, Li, X. Q., Li, Z. B., Liang, H., Libby, J., Liu, H. M., Liu, Huanhuan, Liu, Huihui, Liu, J. Y., Liu, L. D., Liu, X., Liu, Y. B., Luo, M. X., Ma, Q. M., Messchendorp, J. G., Mo, X. H., Morales Morales, C., Muchnoi, N. Yu, Ouyang, Q., Peng, H. P., Ping, J. L., Poling, R., Redmer, C. F., Rolo, M., Rong, G., Shi, X., Sun, G. X., Sun, X. H., Tang, G. Y., Tapan, I., Wang, D., Wang, Dan, Wang, K., Wang, W. P., Wang, X. F., Wang, Y., Wang, Z., Wen, S. P., Xia, L., Xiao, Y. J., Xu, Q. J., Yang, Y. H., Yang, Yifan, Yu, B. X., Yu, C. X., Zeng, Z., Zhang, C. C., Zhang, H. H., Zhang, J. Z., Zhang, L., Zhang, Yang, Zhang, Yao, Zhang, Yu, Zhao, Ling, Zhao, Q., Zhemchugov, A., Zhong, B., Zhou, Q., Zhu, J., Zhu, K. J., Zhu, S. H., Zhu, Y. S.
Format:	Article
Language:	English
Subjects:	BESIII Cross-sections NUCLEAR PHYSICS AND RADIATION PHYSICS
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