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

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

2011-05-02

arxiv.org/abs/1105.0320v2

Phys. Rev. Lett. 107, 082004 (2011)

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.107.082004

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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