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

Abstract

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 $\mathcal{O}(10\%)$ CP asymmetries that should be accessible at the LHC with an integrated luminosity of $\mathcal{O}(1000)$ fb${}^{-1}$.

arXiv comment13 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)

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