Search for resonant production of t¯t pairs in 4.8 fb−1 of integrated luminosity of p¯p collisions at √s=1.96 TeV
Ver/ Abrir
Identificadores
URI: https://hdl.handle.net/10902/27261ISSN: 1550-7998
ISSN: 1550-2368
ISSN: 2470-0010
ISSN: 2470-0029
Registro completo
Mostrar el registro completo DCAutoría
Aaltonen, Timo Antero; Álvarez González, Bárbara; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, Gervasio; Palencia Cortezón, José Enrique; Rodrigo Anoro, Teresa; Ruiz Jimeno, Alberto; Scodellaro, Luca; Vila Álvarez, Iván; Vilar Cortabitarte, Rocío; Vizán García, Jesús ManuelFecha
2011-10-27Derechos
© 2011 American Physical Society
Publicado en
Physical Review D - Particles, Fields, Gravitation and Cosmology, 2011, 84(7), 072004
Editorial
American Physical Society
Enlace a la publicación
Resumen/Abstract
We search for resonant production of t¯t pairs in 4.8 fb−1 integrated luminosity of p¯p collision data at √s=1.96 TeV in the lepton+jets decay channel, where one top quark decays leptonically and the other hadronically. A matrix-element reconstruction technique is used; for each event a probability density function of the t¯t candidate invariant mass is sampled. These probability density functions are used to construct a likelihood function, whereby the cross section for resonant t¯t production is estimated, given a hypothetical resonance mass and width. The data indicate no evidence of resonant production of t¯t pairs. A benchmark model of leptophobic Z′→t¯t is excluded with mZ′<900 GeV/c2 at 95% confidence level.
Colecciones a las que pertenece
- D15 Artículos [735]
- D52 Artículos [1180]