Zobrazeno 1 - 10
of 259
pro vyhledávání: '"López Ibáñez, M."'
In flavor models the vacuum alignment of flavons is typically achieved via the $F$-terms of certain fields in the supersymmetric limit. We propose a method for preserving such alignments, up to a rescaling of the vacuum expectation values, even after
Externí odkaz:
http://arxiv.org/abs/2312.07430
Motivated by the Xenon1T excess in electron-recoil measurements, we investigate the prospects of probing axion-like particles (ALP) in lepton flavor violation experiments. In particular, we identify such ALP as a pseudo-Goldstone from the spontaneous
Externí odkaz:
http://arxiv.org/abs/2203.16376
Publikováno v:
Phys. Rev. D 105 (2022) 035021
We present here two concrete examples of models where a sub-TeV scale breaking of their respective $\mathcal{T}_{13}$ and $A_5$ flavor symmetries is able to account for the recently observed discrepancy in the muon anomalous magnetic moment, $(g-2)_\
Externí odkaz:
http://arxiv.org/abs/2112.11455
The confirmation of the discrepancy with the Standard Model predictions in the anomalous magnetic moment by the Muon g-2 experiment at Fermilab points to a low scale of new physics. Flavour symmetries broken at low energies can account for this discr
Externí odkaz:
http://arxiv.org/abs/2104.03296
We propose a 3+1 Higgs Doublet Model based on the $\Delta(27)$ family symmetry supplemented by several auxiliary cyclic symmetries leading to viable Yukawa textures for the Standard Model fermions, consistent with the observed pattern of fermion mass
Externí odkaz:
http://arxiv.org/abs/2102.05658
Publikováno v:
Phys. Rev. D 103, 035028 (2021)
Motivated by the recent Xenon1T result, we study a leptophilic flavour-dependent anomaly-free axion-like particle (ALP) and its effects on charged-lepton flavour violation (CLFV). We present two representative models. The first one considers that the
Externí odkaz:
http://arxiv.org/abs/2007.08834
The stringent experimental bound on $\mu \rightarrow e \gamma$ is compatible with a simultaneous and sizable new physics contribution to the electron and muon anomalous magnetic moments $(g-2)_\ell$ ($\ell=e,\,\mu$), only if we assume a non-trivial f
Externí odkaz:
http://arxiv.org/abs/2003.06633
We consider a supersymmetric type-I seesaw framework with non-universal scalar masses at the GUT scale to explain the long-standing discrepancy of the anomalous magnetic moment of the muon. We find that it is difficult to accommodate the muon g-2 whi
Externí odkaz:
http://arxiv.org/abs/2003.06187
We investigate a $U(1)_{B-L}$ gauge extension of the Standard Model (SM) where the gauge boson mass is generated by the Stueckelberg mechanism. Three right-handed neutrinos are added to cancel the gauge anomaly and hence the neutrino masses can be ex
Externí odkaz:
http://arxiv.org/abs/2001.04078
Autor:
Björkeroth, Fredrik, Varzielas, Ivo de Medeiros, López-Ibáñez, M. L., Melis, Aurora, Vives, Óscar
We investigate the possibility of viable leptogenesis in an appealing $\Delta(27)$ model with a universal texture zero in the (1,1) entry. The model accommodates the mass spectrum, mixing and CP phases for both quarks and leptons and allows for grand
Externí odkaz:
http://arxiv.org/abs/1904.10545