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Nov 4 – 8, 2024
Uppsala University Main Building
Europe/Stockholm timezone

General CP-violating 2HDM in light of the excesses in di-photon searches at the LHC

Nov 6, 2024, 9:40 AM
20m
Uppsala University Main Building

Uppsala University Main Building

Biskopsgatan 3 75310 Uppsala Sweden
BSM Higgs physics BSM Higgs physics 3 - sal IX

Speaker

Guglielmo Coloretti (University of Zurich (UZH) / Paul Scherrer Institute (PSI))

Description

Recently, statistically significant excesses in inclusive and associated di-photon searches have been observed at the LHC, accumulating at around $95$ GeV and $152$ GeV, respectively. In this context, I will argue how the most general CP-violating 2HDM in the Yukawa alignment limit can account for these observations. In the Higgs basis, where the two scalar doublets are identified as $H_1$ and $H_2$, the lagrangian term $Z_7 H_1^\dagger H_2 H_2 ^\dagger H_2 + \rm{h.c.}$ enters the branching ratios to di-photon of the new physics (mostly) CP-even scalar ($H$) and the (mostly) CP-odd scalar ($A$) of the model. While $\Re[Z_7]$ contributes to $H \to \gamma \gamma$, $\Im[Z_7]$ affects $A \to \gamma \gamma$ and can be correlated with the observation of nonzero electric dipole moments.

Primary track BSM Higgs physics
Is the speaker a PhD student or post-doc? Yes - My participation will be fully supported by my research group

Primary author

Guglielmo Coloretti (University of Zurich (UZH) / Paul Scherrer Institute (PSI))

Presentation materials