384 citations · 4.1k across the 89 of their papers we have counts for
7 papers · 1 filter
Proton decay into charged leptons
Thomas Hambye, Julian Heeck
We discuss proton and neutron decays involving three leptons in the final state. Some of these modes could constitute the dominant decay channel because they conserve lepton-flavor…
Lepton Flavor Violation with Displaced Vertices
Julian Heeck, Werner Rodejohann
If light new physics with lepton-flavor-violating couplings exists, the prime discovery channel might not be but rather , where the new boson co…
Large in generic two-Higgs-doublet models
Andreas Crivellin, Julian Heeck, Dario Mueller
We investigate the possible size of in two-Higgs-doublet models with generic Yukawa couplings. Even though the corresponding rates are in general expected to be small due…
Phenomenology of Majorons
Julian Heeck
Majorons are the Goldstone bosons associated to lepton number and thus closely connected to Majorana neutrino masses. Couplings to charged fermions arise at one-loop level, includi…
Cold light dark matter in extended seesaw models
Sami Boulebnane, Julian Heeck, Anne Nguyen +1
We present a thorough discussion of light dark matter produced via freeze-in in two-body decays A -> B DM. If A and B are quasi-degenerate, the dark matter particle has a cold spec…
Cold keV dark matter from decays and scatterings
Julian Heeck, Daniele Teresi
We explore ways of creating cold keV-scale dark matter by means of decays and scatterings. The main observation is that certain thermal freeze-in processes can lead to a cold dark…