Eur. Phys. J. C 19, 137-141
DOI: 10.1007/s100520100574
Effects of the scale-dependent vacuum expectation values in the renormalisation group analysis of neutrino masses
N.N. SinghDepartment of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, UK
(Received: 18 September 2000 / Published online: 23 February 2001 -© Springer-Verlag 2001)
Abstract
The contribution of scale-dependent vacuum expectation values
(VEVs)
of Higgs scalars, which gives significant effects in the evolution
of
the fundamental fermion masses in the minimal supersymmetric standard
model
(MSSM), is now considered in the derivation of
the analytic one-loop expression for the evolution of the
left-handed Majorana neutrino masses with energies. The inclusion
of such an
effect of the running VEV
increases the stability of the neutrino
masses under quantum corrections even for the low values of
at
the scale
GeV, and leads to a mild
decrease of the neutrino masses with higher energies. Such a trend
is common with that of other fundamental fermion masses.
© Società Italiana di Fisica, Springer-Verlag 2001