Shorttitle
One of the outstanding problems in Particle Physics
is the origin of neutrino masses and mixings. The
neutrino mixing was observed atmospheric, solar ,
reactor and accelerator neutrino oscillation data
which imply that they have a non zero mass. The
simplest way to introduce a neutrino masses is to
postulate a right-handed fermion , singlet under
standard model gauge group that mixes with the
standard model fermion via a Dirac mass term.
However, to generate a a sub-electron volt neutrino
mass , it is necessary to fine tune the
corresponding Yukawa coupling to more than one part
of a billion. We propose a model to generate a
small neutrino masses at the TeV scale. In this
model, the smallness of neutrino mass is not due to
the largness of the right handed neutrino mass, but
instead it is due to the smallness of the Dirac mass
term which is induced at one loop level. We also
discuss some ideas beyond four dimensions and the
origin of matter anti-matter asymmetry in the
universe
One of the outstanding problems in Particle Physics
is the origin of neutrino masses and mixings. The
neutrino mixing was observed atmospheric, solar ,
reactor and accelerator neutrino oscillation data
which imply that they have a non zero mass. The
simplest way to introduce a neutrino masses is to
postulate a right-handed fermion , singlet under
standard model gauge group that mixes with the
standard model fermion via a Dirac mass term.
However, to generate a a sub-electron volt neutrino
mass , it is necessary to fine tune the
corresponding Yukawa coupling to more than one part
of a billion. We propose a model to generate a
small neutrino masses at the TeV scale. In this
model, the smallness of neutrino mass is not due to
the largness of the right handed neutrino mass, but
instead it is due to the smallness of the Dirac mass
term which is induced at one loop level. We also
discuss some ideas beyond four dimensions and the
origin of matter anti-matter asymmetry in the
universe