The mass of the top quark is measured using a sample of t (t) over bar candidate events with at least six jets in the final state. The sample is selected from data collected with the CMS detector in pp collisions at root s = 7 TeV in 2011 and corresponds to an integrated luminosity of 3.54 fb(-1). The mass is reconstructed for each event employing a kinematic fit of the jets to a t (t) over bar hypothesis. The top-quark mass is measured to be 173.49 +/- 0.69 ( stat.) +/- 1.21 ( syst.) GeV. A combination with previously published measurements in other decay modes byCMSyields a mass of 173.54 +/- 0.33 (stat.) +/- 0.96 (syst.) GeV.

Measurement of the top-quark mass in all-jets t(t)over-bar events in pp collisions at root s=7 TeV

BISELLO, DARIO;BRANCA, ANTONIO;CARLIN, ROBERTO;GALANTI, MARIO;GASPARINI, FABRIZIO;GASPARINI, UGO;GIUBILATO, PIERO;GOZZELINO, ANDREA;MENEGUZZO, ANNA TERESA;NESPOLO, MASSIMO;PAZZINI, JACOPO;POZZOBON, NICOLA;RONCHESE, PAOLO;SIMONETTO, FRANCO;TOSI, MIA;ZOTTO, PIERLUIGI;ZUMERLE, GIANNI;M. Margoni;M. Grassi;ROSSIN, ROBERTO;A. Gaz;M. Zanetti;
2014

Abstract

The mass of the top quark is measured using a sample of t (t) over bar candidate events with at least six jets in the final state. The sample is selected from data collected with the CMS detector in pp collisions at root s = 7 TeV in 2011 and corresponds to an integrated luminosity of 3.54 fb(-1). The mass is reconstructed for each event employing a kinematic fit of the jets to a t (t) over bar hypothesis. The top-quark mass is measured to be 173.49 +/- 0.69 ( stat.) +/- 1.21 ( syst.) GeV. A combination with previously published measurements in other decay modes byCMSyields a mass of 173.54 +/- 0.33 (stat.) +/- 0.96 (syst.) GeV.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3152143
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