Year: 2025
Type: article
Abstract: A bstract The search for weakly interacting matter particles (WIMPs) is one of the main objectives of the High Luminosity Large Hadron Collider (HL-LHC). In this work we use Machine-Learning (ML) techniques to explore WIMP radiative decays into a Dark Matter (DM) candidate in a supersymmetric framework. The minimal supersymmetric WIMP sector includes the lightest neutralino that can provide the observed DM relic density through its co-annihilation with the second lightest neutralino and lightest chargino. Moreover, the direct DM detection cross section rates fulfill current experimental bounds and provide discovery targets for the same region of model parameters in which the radiative decay of the second lightest neutralino into a photon and the lightest neutralino is enhanced. This strongly motivates the search for radiatively decaying neutralinos which, however, suffers from strong backgrounds. We investigate the LHC reach in the search for these radiatively decaying particles by means of cut-based and ML methods and estimate its discovery potential in this well-motivated, new physics scenario. We demonstrate that using ML techniques would enable access to most of the parameter space unexplored by other searches.
Source: Journal of High Energy Physics
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Funders: National Science Foundation, U.S. Department of Energy, Aspen Center for Physics, Comunidad de Madrid, Office of Science, Oak Ridge Institute for Science and Education, Agencia Estatal de Investigación, Workforce Development for Teachers and Scientists, Argonne National Laboratory, Fermilab, NextGenerationEU
Awards: G102163711, G107546177, G1175115578, G1275292511, G130463927, G1313983767, G1418946953, G1538770391, G154696372, G1664757510, G1746333638, G2229954460, G2262748287, G2287611682, G2430681607, G2432923657, G2469010403, G2494670923, G262962599, G282847690, G2917895714, G300979063, G3075337988, G34346518, G3480869486, G425668148, G4526231891, G473123490, EXPLORING NEW PHYSICS BEYOND THE STANDARD MODEL, G488842982, G498139845, G5080475149, G513797252, G5616713406, G5690970823, G585908603, G601061201, G6017181652, G6848031779, G6918803902, G6941735741, G7002998040, G7084143925, G716412294, G7619220232, Programs on Critical Problems in Physics, Astrophysics and Biophysics at the Aspen Center for Physics, G780864649, G8570346810, G86560745, G969889393, G993149817
OpenAlex ID: W4411930253