On the nature of the fourth generation neutrino and its implications
NAGIOS: RODERIC FUNCIONANDO

On the nature of the fourth generation neutrino and its implications

DSpace Repository

On the nature of the fourth generation neutrino and its implications

Show full item record

View       (1.087Mb)

    
Aparici Benages, Alberto; Herrero García, Juan Andrés; Rius Dionis, Nuria Perfil; Santamaria, Arcadi Perfil
This document is a artículoDate2012

Este documento está disponible también en : http://hdl.handle.net/10550/42567
We consider the neutrino sector of a Standard Model with four generations. While the three light neutrinos can obtain their masses from a variety of mechanisms with or without new neutral fermions, fourth-generation neutrinos need at least one new relatively light right-handed neutrino. If lepton number is not conserved this neutrino must have a Majorana mass term whose size depends on the underlying mechanism for lepton number violation. Majorana masses for the fourth-generation neutrinos induce relative large two-loop contributions to the light neutrino masses which could be even larger than the cosmological bounds. This sets strong limits on the mass parameters and mixings of the fourth-generation neutrinos.

    Aparici Benages, Alberto; Herrero García, Juan Andrés; Rius Dionis, Nuria; Santamaria, Arcadi (2012) On the nature of the fourth generation neutrino and its implications Journal of High Energy Physics 07 7 030-1 030-31
http://dx.doi.org/10.1007/JHEP07(2012)030

This item appears in the following Collection(s)

Show full item record

Search DSpace

Advanced Search

Browse

Statistics