Littlest Seesaw model from S 4 × U(1)
نویسندگان
چکیده
منابع مشابه
Littlest Seesaw model from S 4 × U ( 1 )
We show how a minimal (littlest) seesaw model involving two right-handed neutrinos and a very constrained Dirac mass matrix, with one texture zero and two independent Dirac masses, may arise from S4 × U(1) symmetry in a semi-direct supersymmetric model. The resulting CSD3 form of neutrino mass matrix only depends on two real mass parameters plus one undetermined phase. We show how the phase may...
متن کاملRenormalisation Group Corrections to the Littlest Seesaw Model and Maximal Atmospheric Mixing
The Littlest Seesaw (LS) model involves two right-handed neutrinos and a very constrained Dirac neutrino mass matrix, involving one texture zero and two independent Dirac masses, leading to a highly predictive scheme in which all neutrino masses and the entire PMNS matrix is successfully predicted in terms of just two real parameters. We calculate the renormalisation group (RG) corrections to t...
متن کاملUniversal Seesaw Mass Matrix Model with an S 3 Symmetry
Stimulated by the phenomenological success of the universal seesaw mass matrix model, where the mass terms for quarks and leptons fi (i = 1, 2, 3) and hypothetical super-heavy fermions Fi are given by fLmLFR +FLmRfR + FLMFFR + h.c. and the form of MF is democratic on the bases on which mL and mR are diagonal, the following model is discussed: The mass terms MF are invariant under the permutatio...
متن کاملViolation in Seesaw Model
We study the structure of CP violating phases in the seesaw model. We find that the 3× 6 MNS matrix contains six independent phases, three of which are identified as a Dirac phase and two Majorana phases in the light neutrino sector while the remaining three arise from the mixing of the light neutrinos and heavy neutrinos. We show how to determine these phases from physical observables. ∗E-mail...
متن کاملLittlest Higgs Model and Unitarity Constraints
The Littlest Higgs Model is constrained using the tree-level perturbative arguments, similar to those used to obtain the Higgs mass bound. It is found that demanding that the theory respects perturbative unitarity upto scales of the order of TeV, in turn implies that the scale f , the analog of pion decay constant, is around 4 TeV.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2016
ISSN: 1029-8479
DOI: 10.1007/jhep09(2016)023