$e^{+}e^{-}\rightarrow\Xi^{0}\bar{\Xi}^{0}$ 阈能附近截面测量
高能物理 - 实验
2021-08-09 v2
摘要
利用 BESIII 探测器在 BEPCII 上收集的质心能量介于 2.644 与 3.080 GeV 之间的十个能点的 对撞数据，对应积分亮度约 500 pb，我们采用单标记方法测量了过程 的截面与有效形状因子。用 pQCD 驱动的幂函数对 截面进行拟合，未观测到显著的共振或阈能增强。此外，利用近期 BESIII 测量计算了过程 与 的截面之比，发现其与同位旋对称性的预期相符。
引用
@article{arxiv.2105.14657,
title = {Measurement of cross section for $e^{+}e^{-}\rightarrow\Xi^{0}\bar{\Xi}^{0}$ near threshold},
author = {BESIII Collaboration and M. Ablikim and M. N. Achasov and P. Adlarson and S. Ahmed and M. Albrecht and R. Aliberti and A. Amoroso and M. R. An and Q. An and X. H. Bai and Y. Bai and O. Bakina and R. Baldini Ferroli and I. Balossino and Y. Ban and K. Begzsuren and N. Berger and M. Bertani and D. Bettoni and F. Bianchi and J. Bloms and A. Bortone and I. Boyko and R. A. Briere and H. Cai and X. Cai and A. Calcaterra and G. F. Cao and N. Cao and S. A. Cetin and X. Y. Chai and J. F. Chang and W. L. Chang and G. Chelkov and D. Y. Chen and G. Chen and H. S. Chen and M. L. Chen and S. J. Chen and X. R. Chen and Y. B. Chen and Z. J Chen and W. S. Cheng and G. Cibinetto and F. Cossio and X. F. Cui and H. L. Dai and X. C. Dai and A. Dbeyssi and R. E. de Boer and D. Dedovich and Z. Y. Deng and A. Denig and I. Denysenko and M. Destefanis and F. De Mori and Y. Ding and C. Dong and J. Dong and L. Y. Dong and M. Y. Dong and X. Dong and S. X. Du and Y. L. Fan and J. Fang and S. S. 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Sun and L. Sun and S. S. Sun and T. Sun and W. Y. Sun and W. Y. Sun and X Sun and Y. J. Sun and Y. K. Sun and Y. Z. Sun and Z. T. Sun and Y. H. Tan and Y. X. Tan and C. J. Tang and G. Y. Tang and J. Tang and J. X. Teng and V. Thoren and W. H. Tian and Y. T. Tian and I. Uman and B. Wang and C. W. Wang and D. Y. Wang and H. J. Wang and H. P. Wang and K. Wang and L. L. Wang and M. Wang and M. Z. Wang and Meng Wang and W. Wang and W. H. Wang and W. P. Wang and X. Wang and X. F. Wang and X. L. Wang and Y. Wang and Y. Wang and Y. D. Wang and Y. F. Wang and Y. Q. Wang and Y. Y. Wang and Z. Wang and Z. Y. Wang and Ziyi Wang and Zongyuan Wang and D. H. Wei and F. Weidner and S. P. Wen and L. Z. Wen and D. J. White and U. Wiedner and G. Wilkinson and M. Wolke and L. Wollenberg and J. F. Wu and L. H. Wu and L. J. Wu and X. Wu and Z. Wu and L. Xia and H. Xiao and S. Y. Xiao and Z. J. Xiao and X. H. Xie and Y. G. Xie and Y. H. Xie and T. Y. Xing and G. F. Xu and Q. J. Xu and W. Xu and X. P. 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Zhao and Q. Zhao and S. J. Zhao and Y. B. Zhao and Y. X. Zhao and Z. G. Zhao and A. Zhemchugov and B. Zheng and J. P. Zheng and Y. Zheng and Y. H. Zheng and B. Zhong and C. Zhong and L. P. Zhou and Q. Zhou and X. Zhou and X. K. Zhou and X. R. Zhou and X. Y. Zhou and A. N. Zhu and J. Zhu and K. Zhu and K. J. Zhu and S. H. Zhu and T. J. Zhu and W. J. Zhu and W. J. Zhu and Y. C. Zhu and Z. A. Zhu and B. S. Zou and J. H. Zou},
journal= {arXiv preprint arXiv:2105.14657},
year = {2021}
}
备注
11 pages, 5 figures. Consistent with paper published in Phys. Lett. B 820 (2021) 136557