25-30 September 2011
Sant Feliu de Guixols, Spain
Europe/Madrid timezone

Differential cross section estimation by a matrix element based method.

Not scheduled
1m
Sant Feliu de Guixols, Spain

Sant Feliu de Guixols, Spain

Speaker

Mr arnaud Pin (Institut de Physique Nucleaire-Departement de Physique-Universi)

Description

In high energy collider physics, some topology cannot be fully reconstructed using the detector information only. Some techniques like kinematical fitting (KF) or matrix weighted template (MWT) have been developed to handle this difficulty. This is for instance the case for topologies arising from top quark pair production, when two leptons are present in the final state together with two neutrinos that cannot be detected. The purpose of this work is the development of a new analysis technique that allows the determination of differential cross sections with respect to arbitrary kinematic variables, such as the ttbar invariant mass or the angle between the top quarks in the ttbar rest frame. This technique, based on the matrix element method, makes the best use of the experimental information given a set of theoretical hypotheses.

Primary author

Mr arnaud Pin (Institut de Physique Nucleaire-Departement de Physique-Universi)

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