Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: u^{c}d^{c}d^{c}-Based Affleck-Dine Baryogenesis   We consider the possibility of a successful Affleck-Dine mechanism along the
u^c d^c d^c direction in R-parity symmetric extensions of the minimal
supersymmetric Standard Model (MSSM) which contain a gauge singlet superfield
phi. Such gauge singlets commonly occur in extensions of the MSSM, for example
in models which seek to account for neutrino masses. We consider a two scalar
Affleck-Dine mechanism, with the flat direction stabilized by a
non-renormalizible superpotential term of the form (lambda/M) phi udd ~
(lambda/M) phi psi^3, where psi corresponds to the gauge non-singlet flat
direction. We give approximate solutions of the scalar field equations of
motion which describe the evolution of the condensates and show that the final
baryon asymmetry in this case is suppressed relative to that expected from the
conventional single scalar Affleck-Dine mechanism, based on a superpotential
term of the form (lambda/(4M)) psi^4, by a factor
(m_{s}/(m_{phi}+m_{s}))^(1/2), where m_{s} is the soft supersymmetry breaking
scalar mass and m_{phi} is the supersymmetric phi mass. It is possible for the
model to generate a baryon asymmetry even in the limit of unbroken B-L, so long
as the gauge singlet condensate doesn't decay until after anomalous electroweak
B+L violation is out of equilibrium following the electroweak phase transition.
This condition is generally satisfied if all Dirac neutrino masses are less
than around 10keV. This class of Affleck-Dine models can, in principle,be
experimentally ruled out, for example by the observation of a Dirac mass for
the mu or tau neutrino significantly larger than around 10keV together with a
mostly Higgsino LSP.

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The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
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The categories of this paper are: ao-sci
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The categories of this paper are: q-alg
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The categories of this paper are: quant-ph
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The categories of this paper are: funct-an
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The categories of this paper are: nlin
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The categories of this paper are: eess
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The categories of this paper are: atom-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: math
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The categories of this paper are: q-bio
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The categories of this paper are: hep-lat
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The categories of this paper are: cs
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The categories of this paper are: stat