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arXiv 1504.05500hep-ph
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$\tanβ\to\infty$的大μ介子$(g-2)$与TeV-scale SUSY质量

Large muon $(g-2)$ with TeV-scale SUSY masses for $\tanβ\to\infty$

Markus Bach, Jae-hyeon Park, Dominik Stöckinger, Hyejung Stöckinger-Kim

摘要:

在$\tanβ\to\infty$的MSSM中研究了μ子反常磁矩$a_μ$.这是一个有吸引力的例子,辐射μ介子质量产生与完全不同的定性参数依赖相比,MSSM与通常的,有限的$\tanβ$。实验值和标准模型值之间观察到的正差异只能在存在质量分裂的情况下得到解释,例如双贡献占主导地位。两个最有希望的情况下,其特征在于大希格斯诺质量$μ$或大左手smuon质量$m_L$。详细研究了所需的质量分裂和由此产生的$a_μ^\text{SUSY}$。结果表明,即使在所有超对称质量都在TeV尺度的情况下,也可以解释$a_μ$中的当前差异。本文还提出了有用的分析公式,近似的极限情况下,和基准点。

英文摘要:

The muon anomalous magnetic moment $a_μ$ is investigated in the MSSM for $\tanβ\to\infty$. This is an attractive example of radiative muon mass generation with completely different qualitative parameter dependence compared to the MSSM with the usual, finite $\tanβ$. The observed, positive difference between the experimental and Standard Model value can only be explained if there are mass splittings, such that bino contributions dominate over wino ones. The two most promising cases are characterized either by large Higgsino mass $μ$ or by large left-handed smuon mass $m_L$. The required mass splittings and the resulting $a_μ^\text{SUSY}$ are studied in detail. It is shown that the current discrepancy in $a_μ$ can be explained even in cases where all SUSY masses are at the TeV scale. The paper also presents useful analytical formulas, approximations for limiting cases, and benchmark points.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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