PoS - Proceedings of Science
Volume 450 - The Eleventh Annual Conference on Large Hadron Collider Physics (LHCP2023) - session Joint (Higgs+BSM1)
Extended scalar sectors at the LHC
R. Santos
Full text: pdf
Pre-published on: January 16, 2024
Published on:
Extensions of the scalar sector of the Standard Model (SM) can provide the needed new sources of CP violation. The ATLAS and CMS collaborations have just started probing C-even CP violating neutral Higgs-fermion Yukawa couplings of the top quark and of the tau lepton. Signals of P-even CP violation, are purely bosonic, and rely on the simultaneous observation of three processes, involving at least one extra scalar, still to be discovered. Even without direct observation of a new scalar, the most general triple Z-boson vertex has a P-even CP-violating term that is nonzero in CP-violating extensions of SM. The three processes involving the new scalars, give a non-zero contribution to this form factor. Hence, there is potential for detecting loop-induced P-even, CP-violating phenomena at the LHC even if the kinematics do not allow for direct detection.
DOI: https://doi.org/10.22323/1.450.0087
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