26-30 March 2012
University of Bonn
Europe/Berlin timezone

Top quark production at D0

27 Mar 2012, 15:30
18m
Drawing Room, Mathematical Institute (University of Bonn)

Drawing Room, Mathematical Institute

University of Bonn

Heavy flavours Heavy flavours

Speaker

Karel Soustruznik (C)

Description

We present measurements of the cross sections for the production of top-antitop quark pair production via the strong interaction and for the production of single top quarks via the weak interaction in proton-antiproton collisions at sqrt(s)=1.96 TeV using data corresponding to integrated luminosities of up to 5.4 fb-1. The data were collected with the D0 detector at the Fermilab Tevatron collider. For the top-antitop pair production, measurements are obtained from the study of the kinematic properties and of the b-tagging rates in final states for with either a charged lepton pair accompanied by additional jets and missing transverse momentum, and in final states with one charged lepton, three or more jets and missing transverse momentum. For the single top quark production the measurement is obtained from the final states with one charged lepton, at least two jets and missing transverse momentum, and studies of the relative contributions of different production mechanisms are also presented. Finally we present measurements of the forward-backward asymmetry in the top-antitop quark final states.

Primary authors

Karel Soustruznik (C) Dr Marco Verzocchi (Albert-Ludwigs-Universitaet Freiburg (DE))

Presentation materials