Conveners
Neutrinos theory
- Mario A Acero (Universidad del Atlantico)
In this talk we introduce the neutrino mass problem of the Standard Model of particle physics. Then, we analyze how to generate these masses by introducing right-handed Majorana singlets in the type 1 Seesaw mechanism framework. Afterwards, we explain the origin of these masses through the spontaneous symmetry breaking of a global U(1) symmetry, which introduces a new scalar singlet with a...
We have assumed special structures for the charged and neutral mass matrices in
the lepton sector, inspired by structures for the up and down quark mass matrices that result by
assuming a certain number of symmetrical zeros in their entries named texture zeros. A prediction
of the lepton mixing matrix results from the rotation matrices that diagonalize the mass matrices
in the neutral and...
Aunque el fenómeno de oscilación de neutrinos es bien conocido y estudiado, el acercamiento estándar desde la mecánica cuántica incluye algunos problemas, por ejemplo, en el cálculo de la probabilidad de oscilación. Estudiando la oscilación desde la Teoría Cuántica de Campos se busca ofrecer un mejor panorama en cuanto a estos problemas y plantear la posibilidad de organizar y dar solución a...
El objetivo principal es exponer los límites de la mecánica cuántica con ayuda de la desigualdad de Leggett-Garg, utilizando el fenómeno de oscilación de neutrinos como mediador entre los dos, el cual se fundamenta en el cambio de estado de sabor, fenómeno que corresponde a una superposición coherente de los estados de masa. Se propone estudiar la violación de la desigualdad de Leggett-Garg...
In this work, we show a study of the generation of neutrino masses is carried out from the seesaw type II Mechanism for Dirac neutrinos. These mechanisms not only explain the mass of the neutrino but also its small value compared to charged quarks and leptons. Therefore, a model is proposed to obtain the small neutrino masses by extending the visible content of the Standard Model (SM) with $S$...
We proposed a radiative seesaw model where the neutrino masses are generated at two loops. We analyzed the phenomenology of the Z5 model for two-component dark matter and neutrino masses. The Z5 symmetry allows interactions that give rise to processes between dark matter particles that affect their relic densities and their detection, which we studied in detail. In a first approach we...
The type-I Dirac seesaw extension is made to the DFSZ axion model, where light active neutrinos are Dirac particles and acquire mass through the canonical seesaw mechanism after the Peccei-Quinn and electroweak symmetry breaking, finding that neutrino mass can be approximated to $m_{\nu}≈vf_{a}/Λ_{UV}$, result which relates the three energy scales involved in the model: the mass of the heavy...
