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8 papers · 2 filters
Cosmological constraints on the decay of heavy relics into neutrinos
Thomas Hambye, Marco Hufnagel, Matteo Lucca
A massive particle decaying into neutrinos in the early Universe is known to be less constrained than if it was decaying into other standard model particles. However, even if the d…
Dark matter produced from neutrinos
Marco Hufnagel, Xun-Jie Xu
In the presence of interactions between neutrinos and dark matter (DM), DM can potentially be produced via freeze-in from the neutrino sector. We investigate the implications of su…
Supercool Composite Dark Matter Beyond 100 TeV
Iason Baldes, Yann Gouttenoire, Filippo Sala +1
Dark Matter could be a composite state of a confining sector with an approximate scale symmetry. We consider the case where the associated pseudo-Goldstone boson, the dilaton, medi…
Effective comparison of neutrino-mass models
Rupert Coy, Michele Frigerio
New physics in the lepton sector may account for neutrino masses, affect electroweak precision observables, induce charged-lepton flavour violation, and shift dipole moments. The l…
Probing the muon with future beam dump experiments
Rupert Coy, Xun-Jie Xu
We consider the light explanation of the muon anomaly. Even if such a has no tree-level coupling to electrons, in general one will be induced at loop-level. We show…
Dark matter electromagnetic dipoles: the WIMP expectation
Thomas Hambye, Xun-Jie Xu
We perform a systematic study of the electric and magnetic dipole moments of dark matter (DM) that are induced at the one-loop level when DM experiences four-fermion interactions w…