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RPV 入门ABC之III:来自LQD耦合的R宇称破缺信号分类及其在大型强子对撞机(LHC)的覆盖范围

The ABC of RPV III: Classification of R-parity Violating Signatures from LQD Couplings and their Coverage at the LHC

Herbi K. Dreiner, Yong Sheng Koay, Tina Potter, Martin Schürmann, Rhitaja Sengupta, Apoorva Shah, Nadja Strobbe

arXiv 2608.21033首次发表:更新:

AI 中文总结

该研究作为RPV入门ABC系列第三篇,系统分析LHC对R宇称破缺$LQ\ar{D}$算子信号的覆盖情况,发现色部分灵敏度显著但部分LSP存在覆盖缺口,指出需完善搜索数据库及定向搜索。

AI 中文摘要

我们将具有广泛信号特征的R宇称破缺最小超对称标准模型(RPV-MSSM)作为LHC超出标准模型搜索覆盖范围的测试模型。本文是RPV入门ABC系列的第三项研究,继我们之前对$LL\ar{E}$和$\ar{U}\ar{D}\ar{D}$算子的分析之后,我们专门针对R宇称破缺的$LQ\ar{D}$算子的现象学和实验现状开展系统研究。我们针对所有可能的最轻超对称粒子(LSP)以及8种代表性$LQ\ar{D}$耦合,结合直接LSP产生和规范级联产生两种情况,对不同的对撞机信号特征进行分类。假设每次仅存在一个非零的$LQ\ar{D}$耦合,我们使用在CheckMATE 2中实现的ATLAS和CMS搜索评估当前LHC的覆盖范围,并确定与未来重铸相关的近期搜索。我们发现,当LSP是LHC运动学范围内唯一的超粒子时,对色部分存在显著灵敏度,但对于包含τ轻子的耦合,类wino和类higgsino LSP仍存在覆盖缺口。虽然类 sleptons LSP在LHC的直接产生中仍未受约束,但当LSP是类bino时,类 sleptons次轻超对称粒子(NLSP)存在一定灵敏度。这些结果凸显了CheckMATE 2搜索数据库中的缺口,以及针对特定$LQ\ar{D}$信号特征开展定向LHC搜索的必要性。

英文摘要

We consider the R-parity violating Minimal Supersymmetric Standard Model (RPV-MSSM) with its wide range of signatures as a test model for the coverage of beyond the Standard Model searches at the LHC. Here we present a systematic study of the phenomenological and experimental status of specifically the R-parity violating $LQ\bar D$ operators, as the third study in the ABC of RPV series, following our previous analyses of the $LL\bar E$ and $\bar U\bar D\bar D$ operators. We classify the distinct collider signatures for all possible LSPs and for eight representative $LQ\bar D$ couplings, considering both direct LSP production and production through gauge cascades. Assuming one non-zero $LQ\bar D$ coupling at a time, we assess the current LHC coverage using ATLAS and CMS searches implemented in $\texttt{CheckMATE 2}$, and identify recent searches relevant for future recasting. We find substantial sensitivity to the colored sector, while gaps remain for wino- and higgsino-like LSPs for couplings involving $τ$ leptons, when the LSP is the only sparticle within the LHC kinematic limit. Slepton LSPs remain unconstrained in their direct production at the LHC, although some sensitivity is found for slepton NLSPs with a bino-like LSP. These results highlight gaps in the $\texttt{CheckMATE 2}$ search database, as well as the need for targeted LHC searches for specific $LQ\bar D$ signatures.

Comments46 pages, 10 figures, 23 tables

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