63 citations · 270 across the 10 of their papers we have counts for
11 papers · 1 filter
Leptonic flavour transfer: a new window on flavour gauge symmetries
L. Darmé, N. Fardeau, F. Mahmoudi +1
New flavour non-abelian gauge groups, which may arise as part of a fundamental theory of flavour, can lead to distinctive flavour-transfer processes. When restricted to the lepton…
Gravitational waves from flavoured SU(2) early-universe phase transitions
Anna Chrysostomou, Alan S. Cornell, Luc Darmé +2
Flavourful extensions of the Standard Model aimed at explaining its fermionic mass structure typically rely on symmetries, broken at high-energy scales far beyond the reach of fore…
Flavour anomalies and the muon from feebly interacting particles
Luc Darmé, Marco Fedele, Kamila Kowalska +1
We perform a phenomenological analysis of simplified models of light, feebly interacting particles~(FIPs)that can provide a combined explanation of the anomalies in $b\to s l^+ l ^…
Flavour anomalies from a split dark sector
Luc Darmé, Marco Fedele, Kamila Kowalska +1
We investigate solutions to the flavour anomalies in decays based on loop diagrams of a "split" dark sector characterised by the simultaneous presence of heavy particles at the…
Light Dark Sectors through the Fermion Portal
Luc Darmé, Sebastian A. R. Ellis, Tevong You
Pairs of Standard Model fermions form dimension-3 singlet operators that can couple to new dark sector states. This "fermion portal" is to be contrasted with the lower-dimensional…
Flavor anomalies and dark matter in SUSY with an extra U(1)
Luc Darmé, Kamila Kowalska, Leszek Roszkowski +1
Motivated by the recent anomalies in transitions that emerged at LHCb, we consider a model with an gauge symmetry and additional vector-like fermions. W…
Light dark Higgs boson in minimal sub-GeV dark matter scenarios
Luc Darmé, Soumya Rao, Leszek Roszkowski
Minimal scenarios with light (sub-GeV) dark matter whose relic density is obtained from thermal freeze-out must include new light mediators. In particular, a very well-motivated ca…
Muon g-2 and related phenomenology in constrained vector-like extensions of the MSSM
Arghya Choudhury, Luc Darmé, Leszek Roszkowski +2
We analyze two minimal supersymmetric constrained models with low-energy vector-like matter preserving gauge coupling unification. In one we add to the MSSM spectrum a pair of 5-pl…
(O)Mega Split
Karim Benakli, Luc Darmé, Mark Goodsell
We study two realisations of the Fake Split Supersymmetry Model (FSSM), the simplest model that can easily reproduce the experimental value of the Higgs mass for an arbitrarily hig…
The Slow Gravitino
Karim Benakli, Luc Darmé, Yaron Oz
When the supersymmetry breaking sector is a fluid background, Lorentz invariance is broken spontaneously. The super-Higgs mechanism leads to a gravitino Lagrangian with Lorentz sym…
A Fake Split Supersymmetry Model for the 126 GeV Higgs
Karim Benakli, Luc Darmé, Mark D. Goodsell +1
We consider a scenario where supersymmetry is broken at a high energy scale, out of reach of the LHC, but leaves a few fermionic states at the TeV scale. The particle content of th…