6–11 Jul 2025
PALAIS DU PHARO, Marseille, France
Europe/Paris timezone

The Electric Dipole Moment of the electron in the decoupling limit of the aligned Two-Higgs Doublet Model

8 Jul 2025, 09:45
15m
PALAIS DU PHARO, Marseille, France

PALAIS DU PHARO, Marseille, France

Parallel T09 - Beyond the Standard Model T09

Speaker

Juan Manuel Dávila Illán (IFIC (UV - CSIC))

Description

We present a discussion of model-independent contributions to the EDM of the electron.
We focus on those contributions that can emerge from an extended heavy scalar sector, and in particular we explore the decoupling limit of the aligned 2HDM.
In this model, Barr-Zee diagrams with a fermion loop produce logarithmically-enchanced contributions that are proportional to potentially large sources of CP violation. In the decoupling limit these contributions are generated by effective dimension-6 operators via the mixing of four-fermion operators into the EW dipole operator.
Some of these logarithmic contributions are not present in more constrained versions of the 2HDM where a $\mathcal Z_2$ symmetry is imposed. Thus, the $\mathcal Z_2$ symmetry provides a suppression mechanism.
We then study how does the experimental constraints oelectron EDM affect the extended set of parameters of the aligned 2HDM.

Secondary track T09 - Beyond the Standard Model

Authors

Juan Manuel Dávila Illán (IFIC (UV - CSIC)) Emilie Passemar (IFIC-University of Valencia) Antonio Pich (IFIC) Luiz Vale Silva (UCH CEU Valencia) Anirban Karan (IFIC)

Presentation materials

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