New Physics and the Quark/Lepton Family Replication Puzzle

Z and Higgs boson decays with doubly-charged scalars at one-loop: Current constraints, future sensitivities, and application to lepton-triality models

G Lichtenstein, MA Schmidt, G Valencia, RR Volkas

2025-04-01

We analyse the Z and Higgs boson decays Z→ℓ⁺ℓ⁻ (ℓ=e,μ,τ), H→γγ and H→Zγ that are induced at one-loop level i..

Classification of three-family flavoured DFSZ axion models that have no domain wall problem

P Cox, MJ Dolan, M Hayat, A Thamm, RR Volkas

2024-01-01

We provide an exhaustive classification of three-family DFSZ axion models that have no cosmological domain wall problem. This resu..

Scalar dark matter explanation of the excess in the Belle II B → K invisible measurement

XG He, XD Ma, MA Schmidt, G Valencia, RR Volkas

2024-01-01

Recently Belle II reported the first measurement of B+ → K+ + invisible(inv), which is 2.7σ above the standard model (SM) predicti..

Complementarity of μTRISTAN and Belle II in searches for charged-lepton flavour violation

G Lichtenstein, MA Schmidt, G Valencia, RR Volkas

2023-10-10

We analyse the potential of the proposed μ⁺μ⁺ and μ⁺e⁻ collider μTRISTAN to complement..

Lepton-flavor-violating tau decays from triality

I Bigaran, XG He, MA Schmidt, G Valencia, R Volkas

2023-03-01

Motivated by flavor symmetry models, we construct theories based on a low-energy limit featuring lepton flavor triality that have ..