Artículo
Measurement of the top pair production cross section in 8 TeV proton-proton collisions using kinematic information in the lepton+jets final state with ATLAS
Aad, G.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; Alconada Verzini, María Josefina
; Alonso, Francisco
; Anduaga, Xabier Sebastian
; Arduh, Francisco Anuar
; Dova, Maria Teresa
; Monticelli, Fernando Gabriel
; Wahlberg, Hernan Pablo
; Otero y Garzon, Gustavo Javier
; Piegaia, Ricardo Nestor
; Reisin, Hernan Diego
; Sacerdoti, Sabrina
; Zieminska, D.; Zimine, N. I.; Zimmermann, C.; Zimmermann, R.; Zimmermann, S.; Zinonos, Z.; Zinser, M.; Ziolkowski, M.; Živković, L.; Zobernig, G.; Zoccoli, A.; Nedden, M. zur; Zurzolo, G.; Zwalinski, L.; The ATLAS Collaboration
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Fecha de publicación:
04/2015
Editorial:
American Physical Society
Revista:
Physical Review D: Particles, Fields, Gravitation and Cosmology
ISSN:
1550-7998
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
A measurement is presented of the tt¯ inclusive production cross section in pp collisions at a center-of-mass energy of s=8 TeV using data collected by the ATLAS detector at the CERN Large Hadron Collider. The measurement was performed in the lepton+jets final state using a data set corresponding to an integrated luminosity of 20.3 fb−1. The cross section was obtained using a likelihood discriminant fit and b-jet identification was used to improve the signal-to-background ratio. The inclusive tt¯ production cross section was measured to be 260±1(stat)−23+22(stat)±8(lumi)±4(beam) pb assuming a top-quark mass of 172.5 GeV, in good agreement with the theoretical prediction of 253−15+13 pb. The tt¯→(e,μ)+jets production cross section in the fiducial region determined by the detector acceptance is also reported.
Palabras clave:
Atlas
,
Top
,
Jets
,
Large Hadron Collider
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Articulos(IFLP)
Articulos de INST.DE FISICA LA PLATA
Articulos de INST.DE FISICA LA PLATA
Citación
Aad, G.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; et al.; Measurement of the top pair production cross section in 8 TeV proton-proton collisions using kinematic information in the lepton+jets final state with ATLAS; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; D 91; 4-2015; 112013
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