Research Papers in Physics and Astronomy

 

Date of this Version

2011

Citation

PHYSICAL REVIEW LETTERS 107, 082004 (2011); DOI: 10.1103/PhysRevLett.107.082004

Comments

Copyright 2011 American Physical Society

Abstract

We measure the top quark mass (mt) in pp̅ collisions at a center of mass energy √s= 1.96 TeV using dilepton tt̅W+bW-b̅→ℓ+vbℓ-events, where ℓ denotes an electron, a muon, or a tau that decays leptonically. The data correspond to an integrated luminosity of 5:4 fb1 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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