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

CAUZ, Diego;GIORDANI, Mario;PAULETTA, Giovanni;ROSSI, Melisa;SANTI, Lorenzo Gianni;SCURI, Fabrizio;
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.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11390/878300
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 53
  • ???jsp.display-item.citation.isi??? 34
social impact