We report a measurement of the top-quark mass, M(t), in the dilepton decay channel of (t)over bar t -> bl'(+) nu(l') (b)over bar l(-) (nu) over bar(l) using an integrated luminosity of 1.0 fb(-1) of p (p) over bar collisions collected with the CDF II detector. We apply a method that convolutes a leading-order matrix element with detector resolution functions to form event-by-event likelihoods; we have enhanced the leading-order description to describe the effects of initial-state radiation. The joint likelihood is the product of the likelihoods from 78 candidate events in this sample, which yields a measurement of M(t) = (164.5 +/- 3.9 (stat.) +/- 3.9 (syst.)) GeV/c(2), the most precise measurement of M(t) in the dilepton channel.

Precision measurement of the top-quark mass from dilepton events at CDF II

CIOCCI, MARIA AGNESE;DONATI, SIMONE;G. Punzi;
2007-01-01

Abstract

We report a measurement of the top-quark mass, M(t), in the dilepton decay channel of (t)over bar t -> bl'(+) nu(l') (b)over bar l(-) (nu) over bar(l) using an integrated luminosity of 1.0 fb(-1) of p (p) over bar collisions collected with the CDF II detector. We apply a method that convolutes a leading-order matrix element with detector resolution functions to form event-by-event likelihoods; we have enhanced the leading-order description to describe the effects of initial-state radiation. The joint likelihood is the product of the likelihoods from 78 candidate events in this sample, which yields a measurement of M(t) = (164.5 +/- 3.9 (stat.) +/- 3.9 (syst.)) GeV/c(2), the most precise measurement of M(t) in the dilepton channel.
2007
Abulencia, A.; Adelman, J.; Affolder, T.; Akimoto, T.; Albrow, M. G.; Ambrose, D.; Amerio, S.; Amidei, D.; Anastassov, A.; Anikeev, K.; Annovi, A.; An...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/828596
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