We report two measurements of the top-quark mass M(top) using the CDF II detector at the Fermilab Tevatron in a 318 pb(-1) data sample of t (t) over bar events in the lepton+jets final state. One method uses an event-based likelihood technique resulting in M(top)=173.2(-2.4)(+2.6)(stat)+/- 3.2(syst) GeV/c(2) or 173.2(-4.0)(+4.1) GeV/c(2). The second method reconstructs a top-quark mass in each event using the measured invariant mass of the hadronically decaying W boson to constrain the jet energy scale to obtain a value for M(top) of 173.5(-3.6)(+3.7)(stat)+/- 1.3(syst) GeV/c(2) or 173.5(-3.8)(+3.9) GeV/c(2). We take the latter, which is more precise, as our result.

Precision top-quark mass measurement in the lepton plus jets topology in p(p)over-bar collisions at root s=1.96 TeV

CIOCCI, MARIA AGNESE;DONATI, SIMONE;PUNZI, GIOVANNI;
2006-01-01

Abstract

We report two measurements of the top-quark mass M(top) using the CDF II detector at the Fermilab Tevatron in a 318 pb(-1) data sample of t (t) over bar events in the lepton+jets final state. One method uses an event-based likelihood technique resulting in M(top)=173.2(-2.4)(+2.6)(stat)+/- 3.2(syst) GeV/c(2) or 173.2(-4.0)(+4.1) GeV/c(2). The second method reconstructs a top-quark mass in each event using the measured invariant mass of the hadronically decaying W boson to constrain the jet energy scale to obtain a value for M(top) of 173.5(-3.6)(+3.7)(stat)+/- 1.3(syst) GeV/c(2) or 173.5(-3.8)(+3.9) GeV/c(2). We take the latter, which is more precise, as our result.
2006
A., Abulencia; D., Acosta; J., Adelman; T., Affolder; T., Akimoto; M. G., Albrow; D., Ambrose; S., Amerio; D., Amidei; A., Anastassov; K., Anikeev; A....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/828520
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