DOI 10.1007/s100520000456
An efficient renormalization group improved implementation
of the MSSM effective potential
Division of Theoretical Physics, University of Ioannina,
451 10 Ioannina, Greece
Received: 31 August 1999 / Revised version: 22 March 2000 /
Published online: 23 October 2000 - © Springer-Verlag
Abstract
In the context of MSSM, a novel improving procedure based on
the
renormalization group equation is applied to the effective potential
in
the Higgs sector. We focus on the one-loop radiative corrections
computed
in Landau gauge by using the mass independent renormalization
scheme
.
Thanks to the decoupling theorem, the
well-known
multimass scale problem is circumvented by switching to a new
effective
field theory every time a new particle threshold is encountered.
We find
that, for any field configuration, there is a convenient renormalization
scale
at which the loop expansion respects the
perturbation
series hierarchy and the theory retains the vital property of
stability.
Copyright Società Italiana di Fisica, Springer-Verlag 2000
