4-11 July 2012
Melbourne Convention and Exhibition Centre
Australia/Melbourne timezone
ICHEP2012 - 36th International Conference for High Energy Physics

Top quark pair production cross section at CMS

5 Jul 2012, 09:15
15m
Room 216 (Melbourne Convention and Exhibition Centre)

Room 216

Melbourne Convention and Exhibition Centre

Melbourne Australia
Parallel Sessions Track 4 - Top Quark Physics TR4 - Top Quark Physics

Speaker

Dr Ana Rodriguez Marrero (Universidad de Cantabria (ES))

Description

Precision measurements are presented of the top-pair production cross section in proton-proton collisions at the LHC at a centre-of-mass energy of 7 TeV. The data are collected with the CMS experiment during the year 2011. The measurements are performed in several decay channels, the lepton+jets, the dilepton and the fully hadronic channels, including the tau-dilepton and tau+jets modes. B-jet identification is used to increase the purity of the selection. The backgrounds are determined using data-driven techniques. The results are combined with each other and compared with theory predictions.

Primary author

Dr Ana Rodriguez Marrero (Universidad de Cantabria (ES))

Presentation materials