Jul 6 – 13, 2022
Bologna, Italy
Europe/Rome timezone

A last chance for kinetic mixing: explaining $(g-2)_\mu$ with semi-visible dark photons

Jul 8, 2022, 12:23 PM
17m
Room 9 (Indaco)

Room 9 (Indaco)

Parallel Talk Quark and Lepton Flavour Physics Quark and Lepton Flavour Physics

Speaker

Mr Daniele Massaro (Alma Mater Studiorum - Università di Bologna / Université Catholique de Louvain)

Description

We reconsider kinetically mixed dark photons as an explanation of the $(g-2)_\mu$ anomaly. While fully visible and invisible dark photon decays are excluded, a semi-visible solution can still explain the discrepancy. We explicitly re-evaluate the constraints from B-factories and fixed-target experiments, namely BaBar and NA64, pointing to a solution in terms of dark sector models with dark neutral leptons with fast decays or co-annihilating dark matter candidates. Several of these models lead to upscattering signatures at neutrino experiments.

In-person participation Yes

Primary authors

Asli Abdullahi (Durham University) Mr Daniele Massaro (Alma Mater Studiorum - Università di Bologna / Université Catholique de Louvain) Matheus Hostert (Perimeter Institute) Silvia Pascoli (University of Bologna)

Presentation materials