Measurement of the top-quark mass in all-jets tt¯ events in pp collisions at vs=7 TeV

Chatrchyan, Serguei; Brochero Cifuentes, Javier Andrés; Cabrillo Bartolomé, José Iban; Calderón Tazón, Alicia; Chuang, S. H.; Duarte Campderros, Jorge; Fernández García, Marcos; Gómez Gramuglio, Gervasio; González Sánchez, Francisco Javier; Graziano, Alberto; Jordá Lope, Clara; López Virto, María Amparo; Marco de Lucas, Jesús; Marco de Lucas, Rafael José; Martínez Rivero, Celso; Matorras Weinig, Francisco; Muñoz Sánchez, Francisca Javiela; Rodrigo Anoro, Teresa; Rodríguez Marrero, Ana Yaiza; Ruiz Jimeno, Alberto; Scodellaro, Luca; Vila Álvarez, Iván; Vilar Cortabitarte, Rocío

doi:10.1140/epjc/s10052-014-2758-x

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Measurement of the ... (637.2Kb)

Identificadores

URI: http://hdl.handle.net/10902/13865

DOI: 10.1140/epjc/s10052-014-2758-x

ISSN: 1434-6044

ISSN: 1434-6052

Fecha

2014-04

Derechos

Atribución 3.0 España

Publicado en

European Physical Journal C, Vol. 74, Num. 4, Art. Num. 2758, (2014)

Editorial

Springer New York LLC

Enlace a la publicación

https://doi.org/10.1140/epjc/s10052-014-2758-x

Resumen/Abstract

The mass of the top quark is measured using a sample of tt¯ 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 vs=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 tt¯ 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 by CMS yields a mass of 173.54±0.33(stat.)±0.96(syst.) GeV.

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