Measurement of the top quark mass in the all-hadronic mode at CDF

A measurement of the top quark mass (Mtop) in the all-hadronic decay channel is presented. It uses 5.8 fb?1 of pp¯ data collected with the CDF II detector at the Fermilab Tevatron Collider. Events with six to eight jets are selected by a neural network algorithm and by the requirement that at least...

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Detalhes bibliográficos
Autores: Aaltonen, Timo Antero, Álvarez González, Bárbara, Casal Laraña, Bruno, Cuevas Maestro, Francisco Javier, Gómez Gramuglio, Gervasio|||0000-0002-1077-6553, Palencia Cortezón, José Enrique, Rodrigo Anoro, Teresa, Ruiz Jimeno, Alberto|||0000-0002-3639-0368, Scodellaro, Luca|||0000-0002-4974-8330, Vila Álvarez, Iván |||0000-0002-6797-7209, Vilar Cortabitarte, Rocío|||0000-0003-2045-8054, Vizán García, Jesús Manuel|||0000-0002-6823-8854
Formato: artículo
Fecha de publicación:2012
País:España
Recursos:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/28369
Acesso em linha:https://hdl.handle.net/10902/28369
Access Level:acceso abierto
Palavra-chave:CDF
Tevatron
Top quark mass
All-hadronic channel
Jet energy scale
Likelihood fit
Physics
Descrição
Resumo:A measurement of the top quark mass (Mtop) in the all-hadronic decay channel is presented. It uses 5.8 fb?1 of pp¯ data collected with the CDF II detector at the Fermilab Tevatron Collider. Events with six to eight jets are selected by a neural network algorithm and by the requirement that at least one of the jets is tagged as a b-quark jet. The measurement is performed with a likelihood fit technique, which simultaneously determines Mtop and the jet energy scale (JES) calibration. The fit yields a value of Mtop = 172.5 ± 1.4(stat) ± 1.0(JES) ± 1.1(syst) GeV/c2.

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