Search for heavy metastable particles decaying to jet pairs in pp̅ collisions at √s=1.96  TeV

A search is performed for heavy metastable particles that decay into jet pairs with a macroscopic lifetime (cτ∼1  cm) in pp̅ collisions at √s=1.96  TeV using data from the CDF II detector at Fermilab corresponding to an integrated luminosity of 3.2  fb-1. To estimate the standard model background, a...

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Detalles Bibliográficos
Autores: Aaltonen, Timo Antero, Amerio, Silvia, Amidei, Dante, Anastassov, Anton, Annovi, Alberto, Antos, Jaroslav, Apollinari, Giorgio, Appel, Jeffrey A., 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, Apresyan, Artur, Álvarez González, Bárbara
Tipo de recurso: artículo
Fecha de publicación:2012
País:España
Institución:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/2276
Acceso en línea:http://hdl.handle.net/10902/2276
Access Level:acceso abierto
Descripción
Sumario:A search is performed for heavy metastable particles that decay into jet pairs with a macroscopic lifetime (cτ∼1  cm) in pp̅ collisions at √s=1.96  TeV using data from the CDF II detector at Fermilab corresponding to an integrated luminosity of 3.2  fb-1. To estimate the standard model background, a data-driven approach is used. Probability-density functions are constructed to model secondary vertices from known processes. No statistically significant excess is observed above the background. Limits on the production cross section in a hidden valley benchmark phenomenology are set for various Higgs boson masses as well as metastable particle masses and lifetimes.