The corrections from one loop and two-loop Barr-Zee type diagrams to muon MDM in BLMSSM

The corrections from one loop and two-loop Barr-Zee type diagrams to muon MDM in BLMSSM
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BLMSSM中一环路和二环Barr-Zee型图对μ介子MDM的修正

DOI:
10.1007/jhep11(2014)119
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发表时间:
2014-05
期刊:
The Journal of High Energy Physics
影响因子:
--
通讯作者:
Xi-Jie Zhan
Xi-Jie Zhan
中科院分区:
其他
文献类型:
--
作者:
Tai-Fu Feng;Hai-Bin Zhang;Ben Yan;Xi-Jie Zhan

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在标准模型的超对称推广中,考虑了Higgs二重态和奇异夸克之间的Yukawa耦合,研究了在矢量玻色子和Higgs之间有一个封闭的费米(标量)圈的单圈图和双圈Barr-Zee型图。利用有效拉格朗日方法,导出了满足电磁规范不变性的对μ子反常磁矩有贡献的6维算符的Wilson系数。在数值分析中,我们考虑了来自Higgs和中微子数据的实验约束。在某些参数空间中,新物理的贡献很大,甚至达到24 × 10−10,可以很好地弥补偏差。
A bstractIn a supersymmetric extension of the standard model where baryon and lepton numbers are local gauge symmetries(BLMSSM) and the Yukawa couplings between Higgs doublets and exotic quarks are considered, we study the one loop diagrams and the two-loop Barr-Zee type diagrams with a closed Fermi(scalar) loop between the vector Boson and Higgs. Using the effective Lagrangian method, we deduce the Wilson coefficients of dimension 6 operators contributing to the anomalous magnetic moment of muon, which satisfies the electromagnetic gauge invariance. In the numerical analysis, we consider the experiment constraints from Higgs and neutrino data. In some parameter space, the new physics contribution is large and even reaches 24 × 10−10, which can remedy the deviation well.
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