Effects of gravitational particle production on Higgs portal dark matter

Fuente: arXiv
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Auteurs principaux: Izumine, Soichiro, Nakayama, Kazunori
Format: Preprint
Publié: 2024
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author Izumine, Soichiro
Nakayama, Kazunori
author_facet Izumine, Soichiro
Nakayama, Kazunori
contents The gravitational interaction is ubiquitous and the effect of gravitational particle production necessarily contributes to the dark matter abundance. A simple candidate of dark matter is a scalar particle, whose only renormalizable interaction is the Higgs portal coupling. We show that the abundance of Higgs portal dark matter is significantly affected by the gravitational production effect. In particular, the gravitational production from the coherently oscillating inflaton field during the reheating often gives dominant contribution.
format Preprint
id arxiv_https___arxiv_org_abs_2403_05199
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Effects of gravitational particle production on Higgs portal dark matter
Izumine, Soichiro
Nakayama, Kazunori
High Energy Physics - Phenomenology
The gravitational interaction is ubiquitous and the effect of gravitational particle production necessarily contributes to the dark matter abundance. A simple candidate of dark matter is a scalar particle, whose only renormalizable interaction is the Higgs portal coupling. We show that the abundance of Higgs portal dark matter is significantly affected by the gravitational production effect. In particular, the gravitational production from the coherently oscillating inflaton field during the reheating often gives dominant contribution.
title Effects of gravitational particle production on Higgs portal dark matter
topic High Energy Physics - Phenomenology
url https://arxiv.org/abs/2403.05199