Speaker
Ms
Conny Beskidt
(IEKP, KIT)
Description
We study the strong correlations between the parameters of the popular
Constrained Minimal Supersymmetric Model (CMSSM) with four independent
parameters. Knowing these correlations allows to develop a multi-step
fitting procedure, which efficiently determines the allowed parameter
space by simply minimizing the chi^2 in multiple steps, i.e. first the
parameters with the highest correlation are determined. The data
included in the fit are the relic density, the b-physics observables,
the anomalous magnetic moment of the muon, upper limits on direct
neutralino-nucleon scattering cross sections and lower limits on Higgs
and sparticle masses from LEP and newest LHC data.
With this new fitting method and including non-Gaussian systematic
errors we find a significantly larger allowed parameter region than
previous methods based on random or Markov Chain sampling of the
parameter space.
Primary authors
Ms
Conny Beskidt
(IEKP, KIT)
Prof.
Dmitri Kazakov
(Dubna, JINR & Moscow, ITEP)
Dr
Eva Ziebarth
(IEKP, KIT)
Dr
Valery Zhukov
(IEKP, KIT)
Prof.
Wim de Boer
(IEKP, KIT)