Dr
Ayres Freitas
(University of Zurich)
28/07/2007, 14:00
Cosmology and Astrophysics
Parallel Talk
In a minimal singlet extension of the MSSM, the nMSSM, both the problem of
baryogenesis and dark matter can be elegantly solved without large fine-tuning. As a
result of these cosmological constraints, the parameter space of the nMSSM is
strongly reduced, and the model predicts that a number of new Higgs and
supersymmetric particles are within reach of the LHC and ILC. Here the...
Prof.
Xerxes Tata
(University of Hawaii)
28/07/2007, 14:20
Cosmology and Astrophysics
Parallel Talk
We examine the phenomenology of recently constructed models where
moduli-mediated contributions to soft SUSY breaking (SSB) parameters are
comparable to those from the Weyl anomaly. This structure of the soft
terms arises in models of string compactification with fluxes, where the
addition of an anti-brane leads to an uplifting potential which yields a
de Sitter Universe and supersymmetry...
Dr
Jari Laamanen
(Helsinki Institute of Physics)
28/07/2007, 14:40
Cosmology and Astrophysics
Parallel Talk
Non-universal boundary conditions in grand unified theories can lead
to non-universal gaugino masses at the unification scale. In R-parity
preserving theories the lightest supersymmetric particle is a natural
candidate for the dark matter. We have studied the composition of the
lightest neutralino in non-universal gaugino mass cases from the
SU(5), and implications on the dark matter. In...
Dr
Roman Nevzorov
(University of Glasgow)
28/07/2007, 15:00
Cosmology and Astrophysics
Parallel Talk
In the minimal supersymmetric standard model (MSSM) and Minimal Non--minimal
Supersymmetric Standard Model (MNSSM) the lightest neutralino can be absolutely
stable providing a good candidate for the cold dark matter component of the Universe.
At the same time the \mu problem of the MSSM is solved within MNSSM without
accompanying problems related with the appearance of domain walls. In...
David Tucker-Smith
(Williams College)
28/07/2007, 15:20
Cosmology and Astrophysics
Parallel Talk
In supersymmetric theories with right-handed neutrinos, new possibilities open up for
dark matter. I will discuss a scenario in which right-handed sneutrinos with weak-scale
masses mix with left-handed sneutrinos through weak-scale A terms. In this case the lightest
sneutrino mass eigenstate is a viable dark matter candidate. After discussing the constraints
on this model from requiring...
Prof.
David Toback
(Texas A&M University)
28/07/2007, 15:40
Cosmology and Astrophysics
Parallel Talk
The minimal supergravity (mSUGRA) model explains the observed dark matter content of
the universe and requires the stau-neutralino co-annihilation mechanism in the early
universe for a region of supersymmetry parameter space. This co-annihilation region
is characterized by a small mass difference (~5-15 GeV) between the lightest stau
and the lightest neutralino. An accurate measurement ...
