Zobrazeno 1 - 10
of 108
pro vyhledávání: '"Romanino, Andrea"'
Publikováno v:
JHEP 05 (2021) 242
We discuss fermion mass hierarchies within modular invariant flavour models. We analyse the neighbourhood of the self-dual point $\tau=i$, where modular invariant theories possess a residual $Z_4$ invariance. In this region the breaking of $Z_4$ can
Externí odkaz:
http://arxiv.org/abs/2101.08718
Autor:
Feruglio, Ferruccio, Romanino, Andrea
We provide a general classification of flavour symmetries according to their interplay with the proper Poincare' and gauge groups and to their linear or nonlinear action in field space. We focus on the lepton sector and we review the different types
Externí odkaz:
http://arxiv.org/abs/1912.06028
We assume that the quark-flavor coefficients matrix of the semileptonic operators addressing the neutral-current B-meson anomalies has rank-one, i.e. it can be described by a single vector in quark-flavor space. By correlating the observed anomalies
Externí odkaz:
http://arxiv.org/abs/1903.10954
Autor:
Domcke, Valerie, Romanino, Andrea
We study natural lepton mass matrices, obtained assuming the stability of physical flavour observables with respect to the variations of individual matrix elements. We identify all four possible stable neutrino textures from algebraic conditions on t
Externí odkaz:
http://arxiv.org/abs/1604.08879
Publikováno v:
JHEP 1605 (2016) 077 (2016-05-13)
We study models in which the 750 GeV diphoton excess is due to a scalar decaying to two pseudo-Nambu-Goldstone bosons that subsequently decay into two pairs of highly boosted photons, misidentified as individual photons. Performing a model independen
Externí odkaz:
http://arxiv.org/abs/1602.00949
Autor:
Marzocca, David, Romanino, Andrea
We study the general properties of hierarchical fermion mass matrices in which the small eigenvalues are stable with respect to perturbations of the matrix entries and we consider specific applications to the charged lepton contribution to neutrino m
Externí odkaz:
http://arxiv.org/abs/1409.3760
Publikováno v:
Phys. Rev. D 88, 115008 (2013)
We investigate the possibility of obtaining sizeable R-parity breaking interactions violating baryon number but not lepton number within supersymmetric grand unified theories. Such a possibility allows to ameliorate the naturalness status of supersym
Externí odkaz:
http://arxiv.org/abs/1305.7034
Publikováno v:
JHEP 07 (2013) 078
We study the collider phenomenology of the minimal unified version of the supersymmetry breaking scheme called Tree-level Gauge Mediation. We identify a peculiar source of gaugino mass non-universality related to the necessary SU(5)-breaking in the l
Externí odkaz:
http://arxiv.org/abs/1302.1305
Publikováno v:
JHEP Volume 2013, Number 05, 73
After the successful determination of the reactor neutrino mixing angle \theta_13 ~ 0.16 \neq 0, a new feature suggested by the current neutrino oscillation data is a sizeable deviation of the atmospheric neutrino mixing angle \theta_23 from \pi/4. U
Externí odkaz:
http://arxiv.org/abs/1302.0423
We present a complete, calculable, and phenomenologically viable model of dynamical supersymmetry breaking. The model is a simple extension of the so called 3-2 model, with gauge group SU(3)xSU(2)xG_SM and the MSSM fields directly coupled to the hidd
Externí odkaz:
http://arxiv.org/abs/1207.5376