Dark matter, supernova neutrinos and other backgrounds in direct dark matter searches. The ANDES laboratory prospects

TL;DR

This paper evaluates the expected signals of dark matter and supernova neutrinos in xenon detectors at the ANDES laboratory, considering sterile neutrinos and background contributions from reactors and geoneutrinos, to inform future direct detection experiments.

Contribution

It provides detailed predictions of dark matter signals and supernova neutrino backgrounds for planned xenon detectors at ANDES, including sterile neutrino effects and various neutrino sources.

Findings

Predicted dark matter detection signals for different supersymmetric models.

Estimated supernova neutrino background including sterile neutrino effects.

Quantified neutrino backgrounds from reactors and geoneutrinos at the ANDES site.

Abstract

Dark Matter particles can be detected directly via their elastic scattering with nuclei. Next generation experiments can eventually find physical evidences about dark matter candidates. With this motivation in mind, we have calculated the expected signals of dark matter particles in xenon detectors. The calculations were performed by considering different masses and parameters within the minimal supersymmetric standard model. Since the detectors can also detect neutrinos, we have analyzed the supernova neutrino signal including a sterile neutrino in the formalism. Using this 3+1 scheme, we make predictions for both the normal and inverse mass hierarchy. In order to perform a study of the response of planned direct-detection experiments, to be located in ANDES (Agua Negra Deep Experimental Site), we have calculated the neutrino contributions to the background by taken into account reactor's neutrinos and geoneutrinos at the site of the lab. As a test detector, we take a Xenon1T-like array.