2009/03/31 by D0 Collaboration, V. M. Abazov, B. Abbott +99
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1103/physrevd.80.071102
published as Phys.Rev.D80:071102,2009 · 8 pages, 4 figures
openalex publication_date 2009/10/19 · arxiv created 2009/10/20 · arxiv updated 2010/04/08 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
We combine measurements of the top quark pair production cross section in pp collisions in the \ensuremathℓ+jets, \ensuremathℓ\ensuremathℓ, and \ensuremathτ\ensuremathℓ final states (where \ensuremathℓ is an electron or muon) at a center of mass energy of √(s)=1.96 TeV in 1 fb^\ensuremath-1 of data collected with the D0 detector. For a top quark mass of 170 GeV/c2, we obtain \ensuremathσ_tt=8.18_\ensuremath-0.87+0.98 pb in agreement with the theoretical prediction. Based on predictions from higher order quantum chromodynamics, we extract a mass for the top quark from the combined tt cross section, consistent with the world average of the top quark mass. In addition, the ratios of tt cross sections in different final states are used to set upper limits on the branching fractions B(t\ensuremath→H+b\ensuremath→\ensuremathτ+\ensuremathνb) and B(t\ensuremath→H+b\ensuremath→csb) as a function of the charged Higgs boson mass.