Prospects for the detection of dark matter with long-lived mediators in the sun using the southern wide-field gamma-ray observatory.
ANDRADE, Micael Jonathan Duarte; FAGIANI, Juan Vitor; SIQUEIRA, Clarissa Martins; SOUZA, Vitor de; VIANA, Aion.
ANDRADE, Micael Jonathan Duarte; FAGIANI, Juan Vitor; SIQUEIRA, Clarissa Martins; SOUZA, Vitor de; VIANA, Aion.
Abstract: The operation of the next generation of gamma-ray observatories will lead to a great advance in dark matter searches. In this paper, we use the hidden sectors hypothesis within the so-called secluded models to calculate the capabilities of the Southern Wide-field Gamma-ray Observatory (SWGO) to detect gamma-ray signatures produced by dark matter particles concentrated in the Sun. We assume the dark matter particle annihilates into metastable mediators which decay into ??, e+e-, t+t-, and b¯b outside the Sun. We found that the SWGO will be able to probe a spin-dependent cross-section of about 10-46 cm2 for dark matter masses smaller than 5 TeV. This result shows an unprecedented sensitivity surpassing the current instruments by more than one order of magnitude.
@article={003234089,author = {ANDRADE, Micael Jonathan Duarte; FAGIANI, Juan Vitor; SIQUEIRA, Clarissa Martins; SOUZA, Vitor de; VIANA, Aion.},title={Prospects for the detection of dark matter with long-lived mediators in the sun using the southern wide-field gamma-ray observatory},journal={Journal of Cosmology and Astroparticle Physics},note={v. 2025, p. 012-1-012-14},year={2025}}