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Measurement of the top-quark mass in the t¯t dilepton channel using the full CDF Run II data set

Abstract: We present a measurement of the top-quark mass in events containing two leptons (electrons or muons) with a large transverse momentum, two or more energetic jets, and a transverse-momentum imbalance. We use the full proton-antiproton collision data set collected by the CDF experiment during the Fermilab Tevatron Run II at center-of-mass energy vs=1.96??TeV, corresponding to an integrated luminosity of 9.1??fb-1. A special observable is exploited for an optimal reduction of the dominant systematic uncertainty, associated with the knowledge of the absolute energy of the hadronic jets. The distribution of this observable in the selected events is compared to simulated distributions of t¯t dilepton signal and background. We measure a value for the top-quark mass of 171.5±1.9?(stat)±2.5?(syst)??GeV/c2.

 Fuente: Phys. Rev. D, Vol. 92, Num. 3, Pag. 032003 (2015)

 Editorial: American Physical Society

 Fecha de publicación: 01/08/2015

 Nº de páginas: 10

 Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevD.92.032003

 ISSN: 1550-7998,1550-2368,2470-0010,2470-0029

 Proyecto español: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01

 Url de la publicación: https://doi.org/10.1103/PhysRevD.92.032003

Autoría

AALTONEN, TIMO ANTERO

BRUNO CASAL LARAÑA

FRANCISCO JAVIER CUEVAS MAESTRO

JOSE ENRIQUE PALENCIA CORTEZON