A bstract We propose a minimal extension of the standard model which includes only one
additional complex scalar field, flavon, with flavor-dependent global U (1) symmetry. It not …

We present a minimal extension of the Standard Model (SM) providing a consistent picture
of particle physics from the electroweak scale to the Planck scale and of cosmology from …

We define a new class of Z′ models with neutral flavor-changing interactions at tree level in
the down-quark sector. They are related in an exact way to elements of the quark mixing …

New sub-GeV vector bosons with couplings to muons but not electrons have been
discussed in order to explain the muon's magnetic moment, the gap of high-energy …

Abstract The Standard Model (SM), if augmented with a light SM-singlet scalar ϕ and a TeV-
scale scalar leptoquark (LQ) S 1, 2-body charged lepton flavor violating (CLFV) decay …

A bstract We investigate to what extent a generic, generation-dependent U (1) symmetry
acting on the quark Yukawa operators can reduce the number of free parameters by forcing …

If light new physics with lepton-flavor-violating couplings exists, the prime discovery channel
might not be ℓ→ ℓ′ γ but rather ℓ→ ℓ′ X, where the new boson X could be an axion …

The upcoming Mu3e experiment aims to search for the lepton flavour violating decay mu+->
e+ e-e+ with a final sensitivity of one signal decay in 10^ 16 muon decays. As this decay is …

We analyze the flavor violating muon decay μ→ e χ, where χ is a massive gauge boson, with
emphasis in the regime where χ is ultralight. We first study this process from an effective field …

Among many possibilities, solar axion has been proposed to explain the electronic recoil
events excess observed by Xenon1T collaboration, although it has tension with …