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Inclusive and differential measurements of the ttbar charge asymmetry at 8 TeV with the CMS experiment

The ttbar charge asymmetry is measured in proton-proton collisions at a centre-of-mass energy of 8 TeV. The data, collected with the CMS experiment at the LHC, correspond to an integrated luminosity of 19.7/fb. Selected events contain an electron or a muon and four or more jets, where at least one j...

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Detalles Bibliográficos
Autor principal: Chwalek, Thorsten
Lenguaje:eng
Publicado: 2015
Materias:
Acceso en línea:http://cds.cern.ch/record/2058608
Descripción
Sumario:The ttbar charge asymmetry is measured in proton-proton collisions at a centre-of-mass energy of 8 TeV. The data, collected with the CMS experiment at the LHC, correspond to an integrated luminosity of 19.7/fb. Selected events contain an electron or a muon and four or more jets, where at least one jet is identified as originating from b-quark hadronization. The ttbar charge asymmetry is measured inclusively and differentially as a function of rapidity, transverse momentum, and invariant mass of the ttbar system. For the first time at the LHC, the measurements are also performed in a reduced fiducial phase space of top quark pair production.