We present the first direct measurement of the top-quark mass using tt¯ events decaying in the hadronic τ+jets decay channel. Using data corresponding to an integrated luminosity of 2.2  fb−1 collected by the CDF II detector in pp¯ collisions at √s=1.96  TeV at the Fermilab Tevatron, we measure the tt¯ cross section, σtt¯, and the top-quark mass, Mtop. We extract Mtop from a likelihood based on per-event probabilities calculated with leading-order signal and background matrix elements. We measure σtt¯=8.8±3.3(stat)±2.2(syst)  pb and Mtop=172.7±9.3(stat)±3.7(syst)  GeV/c2.

Measurements of the Top-Quark Mass and the tt¯ Cross Section in the Hadronic τ+jets Decay Channel at sqrt[s]=1.96  TeV

CAUZ, Diego;PAULETTA, Giovanni;SANTI, Lorenzo Gianni;
2012

Abstract

We present the first direct measurement of the top-quark mass using tt¯ events decaying in the hadronic τ+jets decay channel. Using data corresponding to an integrated luminosity of 2.2  fb−1 collected by the CDF II detector in pp¯ collisions at √s=1.96  TeV at the Fermilab Tevatron, we measure the tt¯ cross section, σtt¯, and the top-quark mass, Mtop. We extract Mtop from a likelihood based on per-event probabilities calculated with leading-order signal and background matrix elements. We measure σtt¯=8.8±3.3(stat)±2.2(syst)  pb and Mtop=172.7±9.3(stat)±3.7(syst)  GeV/c2.
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: http://hdl.handle.net/11390/984951
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 13
  • ???jsp.display-item.citation.isi??? 9
social impact