2 citations · 2 across the 2 of their papers we have counts for
5 papers
Light thermal relics enabled by a second Higgs
Johannes Herms, Sudip Jana, Vishnu P. K. +1
Sub-GeV thermal relic dark matter typically requires the existence of a light mediator particle. We introduce the light two-Higgs-doublet portal, illustrated by a minimal UV-comple…
Production and signatures of multi-flavour dark matter scenarios with t-channel mediators
Johannes Herms, Alejandro Ibarra
We investigate the phenomenology of a dark matter scenario containing two generations of the dark matter particle, differing only by their mass and their couplings to the other par…
Neutrino parameters in the Planck-scale lepton number breaking scenario with extended scalar sectors
Cesar Bonilla, Johannes Herms, Alejandro Ibarra +1
Two-loop effects on the right-handed neutrino masses can have an impact on the low-energy phenomenology, especially when the right-handed neutrino mass spectrum is very hierarchica…
Probing multicomponent FIMP scenarios with gamma-ray telescopes
Johannes Herms, Alejandro Ibarra
We consider a scenario where the dark sector includes two Feebly Interacting Massive Particles (FIMPs), with couplings to the Standard Model particles that allow their production i…
A new mechanism of sterile neutrino dark matter production
Johannes Herms, Alejandro Ibarra, Takashi Toma
We consider a scenario where the dark matter candidate is a sterile neutrino with sizable self-interactions, described by a dimension-six operator, and with negligible interactions…