8-13 August 2011
Rhode Island Convention Center
US/Eastern timezone

Measurements of the top quark mass and the top-antitop mass difference at 7 TeV

Aug 12, 2011, 8:40 AM
553 (Rhode Island Convention Center)


Rhode Island Convention Center

Parallel contribution Top Quark Physics Top Quark Physics


Aram Avetisyan (Department of Physics-Brown University)


The mass of the top quark is a fundamental parameter of the Standard Model. We present a measurements of the top quark mass in proton-proton collisions at the LHC at a centre-of-mass energy of 7 TeV using data collected by the CMS experiment during the year 2011. Measurements are presented in all possible final states originating from top-pair production, and the different reconstruction methods to extract the top quark mass are discussed. Particular emphasis will be given to the contribution of systematic uncertainties. The results of the various channels are combined and compared to the world average. The top mass is also extracted from the top pair cross section measured at CMS, including a determination of mtop in the msbar scheme. Finally, a measurement of the top-antitop quark mass difference is presented.

Primary author

Aram Avetisyan (Department of Physics-Brown University)

Presentation materials