# Measurement of the $tt\bar$ production cross section in $pp\bar$ collisions at $\sqrt{s} = 1.96 TeV$

Abstract : We measure the ttbar production cross section in ppbar collisions at sqrt{s}=1.96 TeV in the lepton+jets channel. Two complementary methods discriminate between signal and background, b-tagging and a kinematic likelihood discriminant. Based on 0.9 fb-1 of data collected by the D0 detector at the Fermilab Tevatron Collider, we measure sigma_ttbar=7.62+/-0.85 pb, assuming the current world average m_t=172.6 GeV. We compare our cross section measurement with theory predictions to determine a value for the top quark mass of 170+/-7 GeV.
Document type :
Journal articles
Physical Review Letters, American Physical Society, 2008, 100, pp.192004. <10.1103/PhysRevLett.100.192004>

http://hal.in2p3.fr/in2p3-00265712
Contributor : Emmanuelle Vernay <>
Submitted on : Thursday, March 20, 2008 - 8:40:16 AM
Last modification on : Wednesday, July 27, 2016 - 2:48:48 PM

### Citation

V.M. Abazov, B. Abbott, M. Abolins, B.S. Acharya, M. Adams, et al.. Measurement of the $tt\bar$ production cross section in $pp\bar$ collisions at $\sqrt{s} = 1.96 TeV$. Physical Review Letters, American Physical Society, 2008, 100, pp.192004. <10.1103/PhysRevLett.100.192004>. <in2p3-00265712>

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