6 papers · 1 filter
Early formation of supermassive black holes via dark matter self-interactions
Jeremie Choquette, James M. Cline, Jonathan M. Cornell
The existence of supermassive black holes at high redshifts () is difficult to accommodate in standard astrophysical scenarios. It has been shown that dark matter models wi…
Baryogenesis from neutron-dark matter oscillations
Torsten Bringmann, James M. Cline, Jonathan M. Cornell
It was recently suggested that dark matter consists of ~GeV particles that carry baryon number and mix with the neutron. We demonstrate that this could allow for resonant dark matt…
Combined collider constraints on neutralinos and charginos
The GAMBIT Collaboration, Peter Athron, Csaba Balázs +18
Searches for supersymmetric electroweakinos have entered a crucial phase, as the integrated luminosity of the Large Hadron Collider is now high enough to compensate for their weak…
Global analyses of Higgs portal singlet dark matter models using GAMBIT
The GAMBIT Collaboration, Peter Athron, Csaba Balázs +15
We present global analyses of effective Higgs portal dark matter models in the frequentist and Bayesian statistical frameworks. Complementing earlier studies of the scalar Higgs po…
Impact of vacuum stability, perturbativity and XENON1T on global fits of and scalar singlet dark matter
Peter Athron, Jonathan M. Cornell, Felix Kahlhoefer +3
Scalar singlet dark matter is one of the simplest and most predictive realisations of the WIMP (weakly-interacting massive particle) idea. Although the model is constrained from al…
Dark decay of the neutron
James M. Cline, Jonathan M. Cornell
New decay channels for the neutron into dark matter plus other particles have been suggested for explaining a long-standing discrepancy between the neutron lifetime measured from t…