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arXiv 2212.09433hep-phhep-ex
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LHC及未来高$p_\text{T}$多轻子信号中CP破坏的通用检验

Generic tests of CP-violation in high-$p_\text{T}$ multi-lepton signals at the LHC and beyond

Yoav Afik, Shaouly Bar-Shalom, Kuntal Pal, Amarjit Soni, Jose Wudka

备注：
13 pages, 5 figures, 3 tables. The paper is reporting on a new formula that specifically deals with the situation when the initial state is NOT self-conjugate, as is the case for pp colliders (i.e. LHC and beyond)
发表信息：
Phys. Rev. Lett. 131, 171801 (2023)
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AI总结：

针对LHC初态非自共轭情形，修改树图级CP破坏标准表达式，提出一种与模型无关的通用搜索策略，用于探测包容性多轻子信号中的CP破坏，并以TeV尺度4-费米子算子为例验证其可观测性。

摘要：

我们引入了对LHC散射过程中树图级CP破坏标准表达式的修改，这在初态非自共轭时很重要。基于此，我们提出了一种通用的、与模型无关的搜索策略，用于探测包容性多轻子信号中的树图级CP破坏。随后，我们以具有复Wilson系数的TeV尺度4-费米子算子$t u \ell \ell$和$t c \ell \ell$为例进行说明，表明其可产生${\cal O}(10\\%)$的CP不对称性，该不对称性在LHC上应可通过${\cal O}(1000)$ fb$^{-1}$的积分亮度观测到。

英文摘要：

We introduce a modification to the standard expression for tree-level CP-violation in scattering processes at the LHC, which is important when the initial state in not self-conjugate. Based on that, we propose a generic and model-independent search strategy for probing tree-level CP-violation in inclusive multi-lepton signals. We then use TeV-scale 4-fermion operators of the form $tu\ell\ell$ and $tc \ell \ell$ with complex Wilson coefficients as an illustrative example and show that it may generate ${\cal O}(10\%)$ CP asymmetries that should be accessible at the LHC with an integrated luminosity of ${\cal O}(1000)$ fb$^{-1}$.

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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