102 citations · 316 across the 6 of their papers we have counts for
5 papers · 1 filter
Minimal decaying dark matter: from cosmological tensions to neutrino signatures
Lea Fuß, Mathias Garny, Alejandro Ibarra
The invisible decay of cold dark matter into a slightly lighter dark sector particle on cosmological time-scales has been proposed as a solution to the tension. In this work…
Enhancement of -wave dark matter annihilation by quasi-bound states
Martin Beneke, Tobias Binder, Lorenzo De Ros +1
We scrutinize the Sommerfeld enhancement in dark matter pair annihilation for -wave and higher- partial waves. For the Yukawa potential these feature a super-resonant Brei…
Majorana Dark Matter with a Coloured Mediator: Collider vs Direct and Indirect Searches
Mathias Garny, Alejandro Ibarra, Sara Rydbeck +1
We investigate the signatures at the Large Hadron Collider of a minimal model where the dark matter particle is a Majorana fermion that couples to the Standard Model via one or sev…
On the gauge dependence of vacuum transitions at finite temperature
Mathias Garny, Thomas Konstandin
In principle, observables as for example the sphaleron rate or the tunneling rate in a first-order phase transition are gauge-independent. However, in practice a gauge dependence i…
Quantum corrections to leptogenesis from the gradient expansion
M. Garny, A. Hohenegger, A. Kartavtsev
Using the closed-time-path formalism we quantify gradient corrections to the kinetic equations for leptogenesis, that are neglected in the standard Boltzmann approach. In particula…