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arXiv 1404.2691hep-ph
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解决LHC反问题中Higgsinos的存在性

Resolving the existence of Higgsinos in the LHC inverse problem

Sunghoon Jung

摘要:

当中性伴子和电荷伴子是重的和纯的,而其他超粒子是解耦的时,LHC逆问题是臭名昭著的挑战。这个极限在当今的粒子物理学中变得越来越重要。幸运的是,在这个极限下,如果它们是LSP或NLSP,Higgsinos会产生一个独特的签名。在强子对撞机的NLSP产生和随后的衰变中,Z玻色子和希格斯玻色子玻色子的数量相等,这是鉴别的标志。这个签名来自于戈德斯通等价定理,根据该定理,Z和希格斯玻色子玻色子的部分宽度是内在相关的,并且来自于希格斯玻色子由两个不可区分的中性伴子组成的事实。因此,它对许多超对称模型都是有效的;例外情况可能发生在希格斯诺非线性物质衰变为弱耦合的线性物质,如轴伴子或引力伴子。

英文摘要:

The LHC inverse problem is infamously challenging when neutralinos and charginos are heavy and pure and other superparticles are decoupled. This limit is becoming more relevant to particle physics nowadays. Fortunately, in this limit, Higgsinos produce a distinctive signature if they are the LSPs or NLSPs. The identifying signature is the presence of equal numbers of Z bosons and Higgs bosons in NLSP productions and subsequent decays at hadron colliders. The signature is derived from the Goldstone equivalence theorem by which partial widths into Z and Higgs bosons are inherently related and from the fact that Higgsinos consist of two indistinguishable neutralinos. Thus it is valid in general for many supersymmetry models; exceptions may happen when Higgsino NLSPs decay to weakly coupled LSPs such as axinos or gravitinos.

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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