Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Felipe, Ricardo Gonzalez"'
We look for all weak bases that lead to texture zeroes in the quark mass matrices and contain a minimal number of parameters in the framework of the standard model. Since there are ten physical observables, namely, six nonvanishing quark masses, thre
Externí odkaz:
http://arxiv.org/abs/1609.09491
We look for predictive flavour patterns of the effective Majorana neutrino mass matrix that are compatible with current neutrino oscillation data. Our search is based on the assumption that the neutrino mass matrix contains equal elements and a minim
Externí odkaz:
http://arxiv.org/abs/1601.06150
Publikováno v:
Phys. Rev. D 92, 025005 (2015)
Several popular Ans\"atze of lepton mass matrices that contain texture zeros are confronted with current neutrino observational data. We perform a systematic $\chi^2$-analysis in a wide class of schemes, considering arbitrary Hermitian charged lepton
Externí odkaz:
http://arxiv.org/abs/1504.06594
Publikováno v:
Phys. Rev. D 88, 116008 (2013)
Adding right-handed neutrino singlets and/or fermion triplets to the particle content of the Standard Model allows for the implementation of the seesaw mechanism to give mass to neutrinos and, simultaneously, for the construction of anomaly-free gaug
Externí odkaz:
http://arxiv.org/abs/1309.1709
We study the cosmological evolution of asymmetries in the two-Higgs doublet extension of the Standard Model, prior to the electroweak phase transition. If Higgs flavour-exchanging interactions are sufficiently slow, then a relative asymmetry among th
Externí odkaz:
http://arxiv.org/abs/1307.6218
Publikováno v:
JHEP 1108:017,2011
The idea of grand unification in a minimal supersymmetric SU(5)xSU(5) framework is revisited. It is shown that the unification of gauge couplings into a unique coupling constant can be achieved at a high-energy scale compatible with proton decay cons
Externí odkaz:
http://arxiv.org/abs/1104.2046
Publikováno v:
Phys.Lett.B648:60-63,2007
The possibility to achieve unification at the string scale in the context of the simplest supersymmetric grand unified theory is investigated. We find conservative upper bounds on the superpartner masses consistent with the unification of gauge and g
Externí odkaz:
http://arxiv.org/abs/hep-ph/0610178
Publikováno v:
J.Phys.Conf.Ser.53:684-694,2006
Using the current precision electroweak data, we look for the minimal particle content which is necessary to add to the standard model in order to have a complete unification of gauge couplings and gravity at the weakly coupled heterotic string scale
Externí odkaz:
http://arxiv.org/abs/hep-ph/0606012
Publikováno v:
Nucl.Phys.B747:312-327,2006
Several phenomenological and cosmological aspects of a minimal extension of the Georgi-Glashow model, where the Higgs sector is composed by 5_H, 15_H, and 24_H, are studied. It is shown that the constraints coming from the unification of gauge intera
Externí odkaz:
http://arxiv.org/abs/hep-ph/0512068
Publikováno v:
Phys.Lett. B363 (1995) 101-105
The quadratic divergences in the scalar sector of the standard model are considered. Since the divergences are present also in the unbroken theory, a natural scale for the divergence formula is proposed to be at the scale of new physics. The implicat
Externí odkaz:
http://arxiv.org/abs/hep-ph/9509223