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arXiv 1312.7854hep-ph
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高尺度超对称中的Sfermion味与质子衰变

Sfermion Flavor and Proton Decay in High-Scale Supersymmetry

Natsumi Nagata, Satoshi Shirai

摘要:

质量约为125 GeV的希格斯玻色子玻色子的发现为进一步研究高尺度超对称性破缺模型提供了强大的动力。在这个框架下,最小超对称SU(5)大统一模型可能是可行的,因为重sfermions通过色三重态Higgs交换抑制质子衰变。与此同时,当质量尺度高达O(100)TeV时,低能精密实验仍然允许sfermion质量中相当大的味道违反,这自然解释了125 GeV的希格斯质量。然而,在存在sfermon味违反的情况下,质子衰变的速率和分支分数可以急剧改变。本文研究了sfermion味结构对质子衰变的影响,讨论了sfermion味破坏的实验约束。我们发现,质子衰变实验可以给我们一个有价值的知识sfermon味破坏,并结合其他低能量精密实验的结果,我们可以提取洞察sfermion部门的结构以及潜在的大统一模型。

英文摘要:

The discovery of the Higgs boson with a mass of around 125 GeV gives a strong motivation for further study of a high-scale supersymmetry (SUSY) breaking model. In this framework, the minimal SUSY SU(5) grand unification model may be viable since heavy sfermions suppress the proton decay via color-triplet Higgs exchanges. At the same time, sizable flavor violation in sfermion masses is still allowed by low-energy precision experiments when the mass scale is as high as O(100) TeV, which naturally explains the 125 GeV Higgs mass. In the presence of the sfermon flavor violation, however, the rates and branching fractions of proton decay can be drastically changed. In this paper, we study the effects of sfermion flavor structure on proton decay and discuss the experimental constraints on sfermion flavor violation. We find that proton-decay experiments may give us a valuable knowledge on sfermon flavor violation, and by combining it with the results from other low-energy precision experiments, we can extract insights to the structure of sfermion sector as well as the underlying grand unification model.

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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