Measurement of the forward-backward asymmetry in top quark-antiquark production in p(p)over-bar collisions using the lepton plus jets channel
2014 (English)In: Physical Review D, ISSN 1550-7998, Vol. 90, no 7Article in journal (Refereed) Published
We present a measurement of the forward-backward asymmetry in top quark-antiquark production using the full Tevatron Run II data set collected by the D0 experiment at Fermilab. The measurement is performed in lepton + jets final states using a new kinematic fitting algorithm for events with four or more jets and a new partial reconstruction algorithm for events with only three jets. Corrected for detector acceptance and resolution effects, the asymmetry is evaluated to be A(FB) = (10.6 +/- 3.0)%. Results are consistent with the standard model predictions which range from 5.0% to 8.8%. We also present the dependence of the asymmetry on the invariant mass of the top quark-antiquark system and the difference in rapidities of the top quark and antiquark.
Place, publisher, year, edition, pages
2014. Vol. 90, no 7
IdentifiersURN: urn:nbn:se:uu:diva-238558DOI: 10.1103/PhysRevD.90.072011ISI: 000344028200001OAI: oai:DiVA.org:uu-238558DiVA: diva2:772864