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arXiv 0905.3088hep-ph
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探测LHC上两体停止衰变中的SUSY CP破坏

Probing SUSY CP Violation in Two-Body Stop Decays at the LHC

Frank Deppisch, Olaf Kittel

摘要:

我们在LHC上研究了顶方子到中性伴子和slepton的两体衰变中的CP不对称性。这些不对称性被用来探测最小超对称标准模型的停止和中性伴子扇区中可能存在的CP相。考虑到从实验电偶极矩搜索的界限,我们确定在mSUGRA参数空间的CP不对称性可以是相当大的,并讨论其在大型强子对撞机观测的可行性。因此,潜在的可检测的CP不对称停止衰变在大型强子对撞机被发现,激发进一步详细的实验研究探测超对称CP阶段。

英文摘要:

We study CP asymmetries in two-body decays of top squarks into neutralinos and sleptons at the LHC. These asymmetries are used to probe the CP phases possibly present in the stop and neutralino sector of the Minimal Supersymmetric Standard Model. Taking into account bounds from experimental electric dipole moment searches, we identify areas in the mSUGRA parameter space where CP asymmetries can be sizeable and discuss the feasibility of their observation at the LHC. As a result, potentially detectable CP asymmetries in stop decays at the LHC are found, motivating further detailed experimental studies for probing SUSY CP phases.

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