Event generators for η/η' rare decays into π+π-l+l- and e+e-μ+μ- |
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引用本文: | 张振宇,秦丽清.Event generators for η/η' rare decays into π+π-l+l- and e+e-μ+μ-[J].中国物理 C,2012,36(10). |
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作者姓名: | 张振宇 秦丽清 |
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作者单位: | 1. College of Physics and Technology, Wuhan University, Wuhan 430072, China;;2. Guangxi Normal University, Guilin 541004, China;;3. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China |
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摘 要: | Study of the rare and forbidden decays of η/η' offers a sensitive probe to test fundamental symmetries of quantum chromodynamics and search for new physics beyond the Standard Model. To study the rare decays of η/η' to π+π-e+e-, π+π-μ+μ- and e+e-μ+μ- at the BESⅢ detector, we developed several event generators based on the vector meson dominant model with finite-width corrections and the pseudoscalar mesons mixing theory. The various distributions from event generators are in good agreement with the theoretical predictions, which indicates that the event generators work very well after implemention in the BESⅢ Monte Carlo simulation package. In the BESⅢ physics analysis, the performance of the event generators will be improved in accordance with the distributions of different variables of η/η' from data and the improvement on the theoretical calculations.
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关 键 词: | event generators rare decays of η/η the BESⅢ detector |
收稿时间: | 2012-2-17 |
修稿时间: | 2012-4-1 |
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