26–29 Jun 2007
CERN
Europe/Zurich timezone

SFitter: Determining supersymmetric parameters

Not scheduled
1m
CERN

CERN

Speaker

Dr Remi Lafaye (LAPP Annecy)

Description

If supersymmetry (or similar complex models) is found at the LHC, the goal for all colliders over the coming decades will be to extract its fundamental parameters from the measurements. Dedicated state-of-the-art tools will be necessary to link a wealth of measurements to an e.g. 20-dimensional MSSM parameter space. Starting from a general log-likelihood function of this high-dimensional parameter space we show how we can find the best-fit parameter values and determine their errors. Beyond a single best-fit point we illustrate how distinct secondary minima occur in complex parameter spaces and how unnatural solutions can be subsequently distinguished. In cases where there are flat dimensions in the likelihood we comment on the benefits and limitations of marginalizing over additional dimensions.

Authors

Dr Dirk Zerwas (LAL Orsay) Dr Michael Rauch (University of Edinburgh) Dr Remi Lafaye (LAPP Annecy) Dr Tilman Plehn (University of Edinburgh)

Presentation materials

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