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arXiv 1206.3096hep-ph
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中微子的第一个LHC约束

First LHC Constraints on Neutralinos

Herbi K. Dreiner, Jong Soo Kim, Oleg Lebedev

摘要:

ATLAS和CMS合作最近报告了一个125 GeV的希格斯粒子存在的诱人线索,其耦合似乎与标准模型(SM)的预期很好地匹配。在这项工作中,我们研究了这一观察的超对称模型的中性伴子部门的影响,假设希格斯信号得到证实。一般来说,希格斯粒子衰变为中性伴子可能是其主要衰变通道之一。由于一个巨大的不可见希格斯衰变分支比会与数据相冲突,这种可能性现在受到限制。特别是在tan β ~ 10和tan β ~ 40的mu <120 GeV,M_1 <70 GeV的区域,我们发现大部分区域是不利的。

英文摘要:

The ATLAS and CMS collaborations have recently reported tantalizing hints of the existence of a 125 GeV Higgs--like particle, whose couplings appear to match well the Standard Model (SM) expectations. In this work, we study implications of this observation for the neutralino sector of supersymmetric models, assuming that the Higgs signal gets confirmed. In general, the Higgs decay into neutralinos can be one of its dominant decay channels. Since a large invisible Higgs decay branching ratio would be in conflict with the data, this possibility is now constrained. In particular, we find that most of the region mu < 170 GeV, M_1 < 70 GeV at tan beta ~ 10 and mu < 120 GeV, M_1 < 70 GeV at tan beta ~ 40 is disfavored.

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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