Measurement of the top quark pair production cross section in the lepton+jets channel in proton-antiproton collisions at √s=1.96 TeV

0367889 - FZÚ 2013 RIV US eng J - Journal Article
Abazov, V. M. - Abbott, B. - Acharya, B.S. - Kupčo, Alexander - Lokajíček, Miloš … Total 425 authors
Measurement of the top quark pair production cross section in the lepton+jets channel in proton-antiproton collisions at √s=1.96 TeV.
Physical Review D: Particles, Fields, Gravitation and Cosmology. Roč. 84, č. 1 (2011), "012008-1"-"012008-18". ISSN 1550-7998
R&D Projects: GA MŠMT LA08047
Institutional research plan: CEZ:AV0Z10100502
Keywords : D0 * Tevatron * pair production * lepton * bottom * jet
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 4.558, year: 2011

We present a measurement of the inclusive top quark pair production cross section in p (p) over bar collisions at root s = 1.96 TeV utilizing data corresponding to an integrated luminosity of 5.3 fb(-1) collected with the D0 detector at the Fermilab Tevatron Collider. We consider final states containing one high-p(T) isolated electron or muon and at least two jets, and we perform three analyses: one exploiting specific kinematic features of t (t) over bar events, the second using b-jet identification, and the third using both techniques to separate the t (t) over bar signal from the background. In the third case, we determine simultaneously the t (t) over bar cross section and the ratio of the production rates of W + heavy flavor jets and W + light flavor jets, which reduces the impact of the systematic uncertainties related to the background estimation. Assuming a top quark mass of 172.5 GeV, we obtain sigma(t (t) over bar) = 7.78(-0.64)(-0.77)pb.
Permanent Link: http://hdl.handle.net/11104/0202405