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Cross-section constrained top quark mass measurement from dilepton events at the Tevatron

par Aaltonen, Timo;De Lentdecker, Gilles ; [et al.]
Référence Physical review letters, 100, 6, 062005
Publication Publié, 2008

Article révisé par les pairs

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Résumé :

We report the first top-quark mass measurement that uses a cross-section constraint to improve the mass determination. This measurement is made with a dilepton tt̄ event candidate sample collected with the Collider Detector II at Fermilab. From a data sample corresponding to an integrated luminosity of 1.2fb-1, we measure a top-quark mass of 170.7-3.9+4.2(stat)±2.6(syst) ±2.4(theory)GeV/c2. The measurement without the cross-section constraint is 169.7-4.9+5.2(stat)±3.1(syst)GeV/c2. © 2008 The American Physical Society.