Looking for new physics via semi-leptonic and leptonic rare decays of D and Ds

It is well recognized that looking for new physics at lower energy colliders is a path wnmn is complemen- tary to high energy machines such as the LHC. Using the large volume of data collected by BESIII, we may have a unique opportunity to tackle this. In this paper we calculate the branching ratios...

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Bibliographic Details
Published in中国物理C：英文版 Vol. 41; no. 9; pp. 59 - 69
Main Author 郭星导 郝喜庆 柯红卫 赵明刚 李学潜
Format Journal Article
LanguageEnglish
Published 01.09.2017
Subjects
可能影响
大型强子对撞机
新物理
稀有衰变
粒子模型
衰变分支比
轻子
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ISSN1674-1137
0254-3052
DOI10.1088/1674-1137/41/9/093107

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Summary:It is well recognized that looking for new physics at lower energy colliders is a path wnmn is complemen- tary to high energy machines such as the LHC. Using the large volume of data collected by BESIII, we may have a unique opportunity to tackle this. In this paper we calculate the branching ratios of the semi-leptonic processes D＋ → K＋e-e＋ and D＋ → K＋e-P-＋, and the leptonic processes D0→ e-e＋ and D0→ e-μ＋, in the frameworks of the U（1） model, 2HDM and unparticle model. It is found that both the U（1） model and 2HDM may influence the semi-leptonic decay rates, but only the U（1） model offers substantial contributions to the pure leptonic decays, and the resultant branching ratio of DO → e- μ＋ can be as large as 10-7 - 10-8. This might be observed at the future super τ-charm factory.
Bibliography:rare decay, D meson, LFV
11-5641/O4
It is well recognized that looking for new physics at lower energy colliders is a path wnmn is complemen- tary to high energy machines such as the LHC. Using the large volume of data collected by BESIII, we may have a unique opportunity to tackle this. In this paper we calculate the branching ratios of the semi-leptonic processes D＋ → K＋e-e＋ and D＋ → K＋e-P-＋, and the leptonic processes D0→ e-e＋ and D0→ e-μ＋, in the frameworks of the U（1） model, 2HDM and unparticle model. It is found that both the U（1） model and 2HDM may influence the semi-leptonic decay rates, but only the U（1） model offers substantial contributions to the pure leptonic decays, and the resultant branching ratio of DO → e- μ＋ can be as large as 10-7 - 10-8. This might be observed at the future super τ-charm factory.
Xing-Dao Guo1,4 Xi-Qing Hao2 Hong-Wei Ke3） Ming-Gang Zhao,Xue-Qian L4（ 1 School of Physics and Math, Xuzhou University of Technology, Xuzhou 221111, China 2 Physics Department, Henan Normal University, Xinxiang 453007, China 3 School of Science, Tianjin University, Tianjin 300072, China 4 Department of Physics, Nankai University, Tianjin 300071, China
ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/41/9/093107