Top quark search with the D0 1992-1993 data sample
Abstract
We present results on the search for the top quark in pp¯ collisions at √s =1.8 TeV with an integrated luminosity of 13.5+/-1.6 pb-1. We have considered tt¯ production in the standard model using electron and muon dilepton decay channels (tt¯-->eμ+jets, ee+jets, and μμ+jets) and single-lepton decay channels (tt¯-->e+jets and μ+jets) with and without tagging of b quark jets. An analysis of these data optimized for top quark masses below 140 GeV/c2 gives a lower top quark mass limit of 128 GeV/c2. An analysis optimized for higher top quark masses yields 9 events with an expected background of 3.8+/-0.9. If we assume that the excess is due to tt¯ production, and assuming a top quark mass of 180 GeV/c2, we obtain a cross section of 8.2+/-5.1 pb.
- Publication:
-
Physical Review D
- Pub Date:
- November 1995
- DOI:
- 10.1103/PhysRevD.52.4877
- Bibcode:
- 1995PhRvD..52.4877A
- Keywords:
-
- 14.65.Ha;
- 13.85.Qk;
- 13.85.Rm;
- Top quarks;
- Inclusive production with identified leptons photons or other nonhadronic particles;
- Limits on production of particles