26–29 Oct 2021
Fully online format
Asia/Tokyo timezone

Impact of light dark matter on Higgs physics

27 Oct 2021, 10:20
20m
Room #2 (Zoom Meeting ID: 823 6921 2312)

Room #2

Zoom Meeting ID: 823 6921 2312

Oral presentation using Zoom Session F: Higgs properties F&H-1: Higgs properties & BSM particle production

Speaker

Yuji Omura (Kindai University)

Description

We explore a novel possibility that dark matter has a light mass below 1 GeV in a lepton portal dark matter model. There are Yukawa couplings involving dark matter, left-handed leptons and an extra scalar doublet in the model. In the light mass region, dark matter is thermally produced via its annihilation into neutrinos. In order to obtain the correct relic abundance, a neutral scalar is required to be light while charged scalars need to be heavier than the electroweak scale. Such a mass spectrum is realized by adjusting quartic couplings in the scalar potential or introducing an extra singlet scalar. We discuss constraints of the light dark matter from Higgs physics, as well as dark matter searches.

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Primary author

Yuji Omura (Kindai University)

Presentation materials