Speaker
Efe Yazgan
(Ghent University (BE))
Description
Measurements of several top-quark properties are presented, obtained from the CMS data collected in 2011 and 2012 at centre-of-mass energies of 7 and 8 TeV. The results include measurements of the top pair charge asymmetry, the W helicity in top decays, the top quark charge, and of the ttbar spin correlation and the search for anomalous couplings. The fraction of top quarks decaying into a W-boson and a b-quark relative to all top quark decays, R=BR(t->Wb)/Sum(BR(t->Wq)), is determined. Furthermore, the cross sections of ttbar events produced in association with a photon or a W or a Z boson are measured.
Author
Manfred Jeitler
(Austrian Academy of Sciences (AT))
