21 citations · 32 across the 7 of their papers we have counts for
7 papers
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\…
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…
Constraints on energy scales from dark matter decay in a gauged model
Guillermo Gambini, Pedro C. de Holanda, Saulo Carneiro
Popular extensions of the standard model of particle physics feature new fields and symmetries which could, for example, dynamically generate neutrino masses from spontaneous…
Constraints on Heavy Neutral Leptons interacting with a singlet scalar
James M. Cline, Guillermo Gambini
Heavy neutral leptons (HNLs) are an attractive minimal extension of the Standard Model, as is a singlet scalar mixing with the Higgs boson. If both are present, it is natural f…
Late-Time Dark Matter Oscillations and the Core-Cusp Problem
James M. Cline, Guillermo Gambini, Samuel D. McDermott +1
The core-cusp problem persists as an unresolved tension between the predictions of CDM cosmology and observations of dark matter (DM) profiles in dwarf spheroidal and other gala…
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…
Azimuthal instabilities of the Gribov-Levin-Ryskin equation
Guillermo Gambini, Giorgio Torrieri
We introduce the phenomenology of elliptic flow in nuclear collisions, and argue that its scaling across energies, rapidities and system sizes could be suggestive of a QCD-based ra…