Ponente
Descripción
Weakly interacting massive particles (WIMPs) are among the leading candidates for dark matter. According to theoretical models, they could accumulate over time within massive astrophysical bodies such as the Sun and annihilate into Standard Model particles, including neutrinos. Neutrino telescopes, consisting of large arrays of photodetectors immersed in a transparent medium, allow us to search for this indirect signature of dark matter by detecting neutrinos originating from the solar core.
In this contribution we will report on an indirect search for dark matter toward the Sun that was performed using 15 years of data collected by the ANTARES neutrino telescope, from 2007 to 2022. Three different reconstruction methodologies were applied to the neutrino events: two standard algorithms developed by the Collaboration and used in various analyses, and a new method based on Machine Learning techniques. An unbinned likelihood analysis was conducted to determine upper limits on the spin-dependent and spin-independent WIMP-nucleon scattering cross-sections for WIMP masses ranging from 35 GeV/c² to 10 TeV/c² and for three different annihilation channels.
