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48 papers · 2 filters
Production of Secondaries in High Energy Heavy Ion Collisions
J. Dias de Deus, Yu. M. Shabelski
In the framework of Quark-Gluon String Model we calculate the inclusive spectra of secondaries produced in heavy ion collisions at intermediate (CERN SPS) and at much higher (RHIC)…
Yukawa Textures, New Physics and Nondecoupling
Gustavo C. Branco, M. N. Rebelo, J. I. Silva-Marcos
We point out that New Physics can play an important r\^ ole in rescuing some of the Yukawa texture zero ans\" atze which would otherwise be eliminated by the recent, more precise m…
Upper Bound on the Mass of the Type III Seesaw Triplet in an SU(5) Model
Ilja Dorsner, Pavel Fileviez Perez
We investigate correlation between gauge coupling unification, fermion mass spectrum, proton decay, perturbativity and ultraviolet cutoff within an SU(5) grand unified theory with…
Parity doublers in chiral potential quark models
Yu. S. Kalashnikova, A. V. Nefediev, J. E. F. T. Ribeiro
The effect of spontaneous breaking of chiral symmetry over the spectrum of highly excited hadrons is addressed in the framework of a microscopic chiral potential quark model (Gener…
Neutrino CP violating parameters from nontrivial quark-lepton correlation: a S3xGUT model
Marco Picariello
We investigate the prediction on the lepton phases in theories with a non trivial correlation between quark (CKM) and lepton (PMNS) mixing matrices. We show that the actual evidenc…
A three-parameter model for the neutrino mass matrix
W. Grimus, L. Lavoura
Using the type-II seesaw mechanism with three Higgs doublets phi_alpha (alpha = e, mu, tau) and four Higgs triplets, we build a model for lepton mixing based on a 384-element horiz…