Speaker
Dr
Sebastien GREDER
(IPHC, Strasbourg, France)
Description
We present the measurement of the top anti-top quark pair production
cross section in dilepton, lepton+jets and tau+lepton final states
using up to 4 fb^-1 of data collected with the D0 detector at the
Fermilab Tevatron collider. We also present the combination of these
channels and extract the top quark mass comparing the measured cross
section to calculations in higher order QCD. Furthermore we study
properties of the top quark decay products such as helicity fractions
of the W bosons. W boson helicity fractions are also sensitive to the
ratios of different anomalous Wtb couplings. We set simultaneous
limits on left-handed vector and right-handed vector, and left-handed
vector and right-handed tensor Wtb couplings and combine this with
results from a search for anomalous Wtb couplings in single top
production.
Primary author
Dr
Sebastien GREDER
(IPHC, Strasbourg, France)
