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arXiv 1706.09418hep-phhep-ex
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LHC上的R奇偶校验违反

R-Parity Violation at the LHC

Daniel Dercks, Herbi Dreiner, Manuel E. Krauss, Toby Opferkuch, Annika Reinert

摘要:

我们研究了在统一尺度下由单个R-宇称破坏耦合扩展的MSSM的现象。对于所有的R-宇称破坏耦合,我们讨论了粒子谱的演变通过重整化群方程和最轻的超对称粒子(LSP)的CMSSM内的性质,作为一个特定的完整的超对称模型的一个例子。我们使用LSP的性质来分类可能的签名。对于每一种可能的情况下,我们详细介绍了目前的大型强子对撞机的超对称粒子质量的界限,通常使用简化模型获得。由此,我们确定目前的覆盖率的R-宇称违反模型在LHC。我们发现了几个缺口,特别是stau-LSP,这是很容易获得的R-奇偶违反模型。使用程序CheckMATE,我们重铸现有的大型强子对撞机搜索设置限制所有R-奇偶违反CMSSM的参数。我们发现,几乎所有这些都是更强的约束或类似的约束相比,R-奇偶守恒CMSSM,包括$\bar U\bar D\bar D$模型。对于每个R-宇称违反CMSSM,我们然后给出所有相关的超对称粒子的明确的质量下界。

英文摘要:

We investigate the phenomenology of the MSSM extended by a single R-parity violating coupling at the unification scale. For all R-parity violating couplings, we discuss the evolution of the particle spectra through the renormalization group equations and the nature of the lightest supersymmetric particle (LSP) within the CMSSM, as an example of a specific complete supersymmetric model. We use the nature of the LSP to classify the possible signatures. For each possible scenario we present in detail the current LHC bounds on the supersymmetric particle masses, typically obtained using simplified models. From this we determine the present coverage of R-parity violating models at the LHC. We find several gaps, in particular for a stau-LSP, which is easily obtained in R-parity violating models. Using the program CheckMATE we recast existing LHC searches to set limits on the parameters of all R-parity violating CMSSMs. We find that virtually all of them are either more strongly constrained or similarly constrained in comparison to the R-parity conserving CMSSM, including the $\bar U\bar D\bar D$ models. For each R-parity violating CMSSM we then give the explicit lower mass bounds on all relevant supersymmetric particles.

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