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Precise measurement of the top quark mass in the dilepton channel at D0

Abstract : We measure the top quark mass (mt) in ppbar collisions at a center of mass energy of 1.96 TeV using dilepton ttbar->W+bW-bbar->l+nubl-nubarbbar events, where l denotes an electron, a muon, or a tau that decays leptonically. The data correspond to an integrated luminosity of 5.4 fb-1 collected with the D0 detector at the Fermilab Tevatron Collider. We obtain mt = 174.0 +- 1.8(stat) +- 2.4(syst) GeV, which is in agreement with the current world average mt = 173.3 +- 1.1 GeV. This is currently the most precise measurement of mt in the dilepton channel.
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http://hal.in2p3.fr/in2p3-00590226
Contributor : Swarna Bassava <>
Submitted on : Tuesday, May 3, 2011 - 9:45:50 AM
Last modification on : Wednesday, September 16, 2020 - 4:25:57 PM

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V. Abazov, G. Bernardi, D. Brown, J. Brown, Y. Enari, et al.. Precise measurement of the top quark mass in the dilepton channel at D0. Physical Review Letters, American Physical Society, 2011, 107, pp.082004. ⟨10.1103/PhysRevLett.107.082004⟩. ⟨in2p3-00590226⟩

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