Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Electroweak Phase Transition in a Nonminimal Supersymmetric Model   We study the electroweak phase transition in a supersymmetric version of the
Standard Model, in which a gauge singlet superfield is added to the Higgs
sector. We show that the order of the transition is determined by the trilinear
soft supersymmetry breaking terms rather than by the $O ( m^{3} T )$ term in
the 1-loop, $T\neq0$ corrections. This fact removes the Standard Model upper
bound on the Higgs mass, $ m_{H} < 55 GeV$, coming from the requirement that
baryon asymmetry is not washed out by anomalous electroweak processes. We
perform a numerical analysis of parameter space including in the effective
potential top-stop contribution to 1-loop radiative corrections. We find that
this model is compatible with the preservation of baryon asymmetry for masses
of the lightest scalar up to about 170 GeV.

12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol