90 research outputs found
SUSY scenarios according to EWSB
This talk provides a limited review of SUSY scenarios with the focus on the
way electroweak symmetry breaking is achieved and understood under different
assumptions. Various aspects of naturalness and their implications are
discussed and compared.Comment: 7 pages, 3 figures, presented at The European Physical Society
Conference on High Energy Physics, 5-12 July, Venice, Ital
Hidden Higgs Scenarios: new constraints and prospects at the LHC
We review the motivation for hidden Higgs scenarios and discuss the light CP
odd Higgs scenario in the NMSSM as an example. We summarize experimental
constraints including recent limits from BaBar and Aleph. The main part of the
talk is the discussion of dominant decay modes of the standard model like Higgs
boson, and related decay modes of the charged Higgs and heavy CP even Higgs
bosons, in these scenarios with the focus on signatures and prospects for the
LHC. Examples include the direct production of a light CP odd Higgs boson, and
a light charged Higgs boson in top quark decays.Comment: 5 pages, invited talk at Physics at the LHC 2010, DESY, Hamburg, 7 -
12 June, 201
Little hierarchy in the minimally specified MSSM
We study constrained versions of the minimal supersymmetric model and
investigate the hierarchy between the electroweak scale and the scale of
superpartners that can be achieved without relying on specifying model
parameters by more than one digit. This approach automatically avoids scenarios
in which a large hierarchy is obtained by special choices of parameters and yet
keeps scenarios that would be otherwise disfavored by various sensitivity
measures. We consider models with universal gaugino and scalar masses, models
with non-universal Higgs masses or non-universal gaugino masses and focus on
scenarios in which all the model parameters are either of the same order or
zero at the grand unification scale. We find that the maximal hierarchy between
the electroweak scale and stop masses, requiring that model parameters are not
specified beyond one digit, ranges from a factor of for the CMSSM
up to for models with non-universal Higgs or gaugino masses.Comment: 17 pages, 4 figures, discussion expanded, matches published versio
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