Results 151 to 160 of about 1,152,487 (306)

Solar neutrinos and neutrino mixing

Physics Letters B, 1976
Abstract The recent suggestion that mixing of many neutrino types accounts for the solar neutrino puzzle is discussed. We find that in general the suppression due to mixing of k species is by less than a factor k.
openaire   +1 more source

Theory of neutrino slow flavor evolution. Part II. Space-time evolution of linear instabilities

Journal of High Energy Physics
Slow flavor evolution (defined as driven by neutrino masses and not necessarily “slow”) is receiving fresh attention in the context of compact astrophysical environments.
Damiano F. G. Fiorillo, Georg G. Raffelt
doaj   +1 more source

Leptogenesis in an SU(5)×A5 golden ratio flavour model

Nuclear Physics B, 2015
In this paper we discuss a minor modification of a previous SU(5)×A5 flavour model which exhibits at leading order golden ratio mixing and sum rules for the heavy and the light neutrino masses.
Julia Gehrlein, Serguey T. Petcov, Martin Spinrath, Xinyi Zhang   +3 more
doaj   +1 more source

Large mixing angles for neutrinos from infrared fixed points

, 2003
Radiative amplification of neutrino mixing angles may explain the large values required by solar and atmospheric neutrino oscillations. Implementation of such mechanism in the Standard Model and many of its extensions (including the Minimal ...
Casas, J. A., Espinosa, J. R., Navarro, I.   +2 more
core   +1 more source

Type II See-Saw Mechanism, Deviations from Bimaximal Neutrino Mixing and Leptogenesis

, 2004
A possible interplay of both terms in the type II see-saw formula is illustrated by presenting a novel way to generate deviations from exact bimaximal neutrino mixing. In type II see-saw mechanism with dominance of the non-canonical SU(2)_L triplet term,
A. Bandyopadhyay, A. S. Joshipura, A. S. Joshipura, B. Pontecorvo, B. Pontecorvo, B. Pontecorvo, B. Pontecorvo, C. Jarlskog, G. Altarelli, G. Altarelli, G. Lazarides, G. C. Branco, G. F. Giudice, J. A. Casas, M. Gell-Mann, P. H. Frampton, R. Barbieri, S. Antusch, S. F. King, T. Ohlsson, W. Buchmüller, Werner Rodejohann, Y. Hayato, Z. Maki   +23 more
core   +1 more source

ECONOMIC MODEL FOR NEUTRINO MASSES AND MIXINGS

, 2021
Paul H. Frampton
openalex   +1 more source

FLAVOR SYMMETRIES, NEUTRINO MASSES AND NEUTRINO MIXING

International Journal of Modern Physics A, 2008
We discuss the neutrino mixing, using the texture 0 mass matrices, which work very well for the quarks. The solar mixing angle is directly linked to the mass ratio of the first two neutrinos. The neutrino masses are hierarchical, but the mass ratios turn out to be much smaller than for quarks. The atmospheric mixing angle is 38°.
openaire   +2 more sources

Deviations to Tri-Bi-Maximal mixing in the limit of μ − τ symmetry

Physics Letters B, 2019
In the limit of an approximate μ−τ symmetry in the neutrino mass matrix, we explore deviations to the Tri-Bi-Maximal mixing pattern in the neutrino sector.
Diana C. Rivera-Agudelo, S.L. Tostado, Abdel Pérez-Lorenzana   +2 more
doaj   +1 more source

An apprach to generate large and small leptonic mixing angles

, 1999
We take up the point of view that Yukawa couplings can be either 0 or 1, and the mass patterns of fermions are generated purely from the structure of the Yukawa matrices.
, B Brahmachari, Cardall C. Y., for Susy unified models with triplets see, Fritzch H., Gell-Mann M., Goodman M. ., Izotov Y. I., Kirilova D. P., Oda K., Pagel B. ., Primack J., Primack J., Suzuki Y., Yanagida T.   +14 more
core   +4 more sources

On neutrino mixing in matter and CP and T violation effects in neutrino oscillations

Physics Letters B, 2018
Aspects of 3-neutrino mixing and oscillations in vacuum and in matter with constant density are investigated working with a real form of the neutrino Hamiltonian.
S.T. Petcov, Ye-Ling Zhou
doaj   +1 more source