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

Measurement of the charge asymmetry in top quark pair production at 7 TeV

Aug 12, 2011, 9:40 AM
553 (Rhode Island Convention Center)


Rhode Island Convention Center

Parallel contribution Top Quark Physics Top Quark Physics


Michael Andrew Segala (Department of Physics-Brown University)


We present a measurement of the charge asymmetry in top-pair production in proton-proton collisions at the LHC at a centre-of-mass energy of 7 TeV. We use data collected by the CMS experiment during the year 2011. The analysis uses events with one charged lepton and at least four jets. In order to measure the charge asymmetry in charge-symmetric initial state processes, the difference of absolute pseudo rapidities of top and anti-top is used. The asymmetry is measured inclusively, but also as a function of the top-pair invariant mass. The results are compared with various theory predictions, and discussed in the context of forward-backard asymmetry measurements at Tevatron.

Primary author

Michael Andrew Segala (Department of Physics-Brown University)

Presentation materials