Constraints on Pseudo-Nambu-Goldstone dark matter from direct detection experiment and neutron star reheating temperature

TL;DR

This paper investigates constraints on Pseudo-Nambu-Goldstone dark matter from direct detection experiments and neutron star reheating, revealing new bounds on its parameter space by considering non-zero momentum transfer effects.

Contribution

It introduces new constraints on Pseudo-Nambu-Goldstone dark matter from direct detection and neutron star observations, accounting for non-zero momentum transfer effects.

Findings

Direct detection constraints are relaxed due to cancellation at zero momentum transfer.

Non-zero momentum transfer provides additional bounds on dark matter parameters.

Neutron star reheating temperature constrains dark matter properties.

Abstract

Pseudo-Nambu-Goldstone dark matter connected to Standard Model fermion through the Higgs portal has the property that its direct detection vanishes in the zero momentum transfer limit due to a cancellation mechanism. This feature helps the Pseudo-Nambu-Goldstone dark matter to escape the stringent constraints from direct detection experiments. In this paper we explore new constraints on parameter space of non-zero momentum transfer from the direct detection experiments, and also from the neutron star temperature via the dark matter reheating mechanism.