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Phys. Rev. Lett. 100, 062005 (2008) [7 pages]

Cross-Section-Constrained Top-Quark Mass Measurement from Dilepton Events at the Tevatron

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T. Aaltonen et al. CDF Collaboration
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Received 22 October 2007; published 15 February 2008

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 tt̅ event candidate sample collected with the Collider Detector II at Fermilab. From a data sample corresponding to an integrated luminosity of 1.2  fb-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

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.062005
DOI:
10.1103/PhysRevLett.100.062005
PACS:
14.65.Ha, 12.15.Ff, 13.85.Ni, 13.85.Qk