3 papers
hep-ph2025
Probing late-time annihilations of oscillating asymmetric dark matter via rotation curves of galaxies
Júlia G. Mamprim, Guillermo Gambini, Luan B. Arbeletche +2
In this paper, we explore the Oscillating Asymmetric Dark Matter (OADM) model to address the core-cusp problem, aiming to resolve the discrepancy between the predictions of the $Λ\…
hep-ph2023
Constraining Gamma-ray Lines from Dark Matter Annihilation using Fermi-LAT and H.E.S.S. data
Lucia Angel, Guillermo Gambini, Leticia Guedes +2
Using 14 years of Fermi-LAT data and 10 years of H.E.S.S. observations in the direction of the galactic center, we derive limits on gamma-ray lines originated from dark matter anni…
hep-ph2018
Vacuum stability conditions of the economical 3-3-1 model from copositivity
B. L. Sánchez-Vega, G. Gambini, C. E. Alvarez-Salazar
By applying copositivity criterion to the scalar potential of the economical model, we derive necessary and sufficient bounded-from-below conditions at tree level. Although…