Measurement of top quark pair differential cross-sections in the dilepton channel in pp collisions at s√ = 7 and 8 TeV with ATLAS

Measurements of normalized differential cross-sections of top quark pair (t t  ̄ ) production are ̄presented as a function of the mass, the transverse momentum and√ the rapidity of the t t sys-tem in proton-proton collisions at center-of-mass energies of s = 7 TeV and 8 TeV. Thedataset corresponds t...

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Detalles Bibliográficos
Autores: Aaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, Maria Teresa, Hoya, Joaquín, Monticelli, Fernando Gabriel, Wahlberg, Hernan Pablo, Bossio Sola, Jonathan David, Otero y Garzon, Gustavo Javier, Piegaia, Ricardo Nestor, Sacerdoti, Sabrina, Zhukov, K., Zibell. A., Zieminska, D., Zimine, N. I., Zimmermann, C., Zimmermann, S., Zinonos, Z., Zinser, M., Ziolkowski, M., Živković, L., Zobernig, G., Zoccoli, A., Nedden, M. zur, Zurzolo, G., Zwalinski, L., The ATLAS Collaboration
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/114311
Acceso en línea:http://hdl.handle.net/11336/114311
Access Level:acceso abierto
Palabra clave:Top
Dilepton
Cross-Section
ATLAS
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
Descripción
Sumario:Measurements of normalized differential cross-sections of top quark pair (t t  ̄ ) production are ̄presented as a function of the mass, the transverse momentum and√ the rapidity of the t t sys-tem in proton-proton collisions at center-of-mass energies of s = 7 TeV and 8 TeV. Thedataset corresponds to an integrated luminosity of 4.6 fb −1 at 7 TeV and 20.2 fb −1 at 8 TeV,recorded with the ATLAS detector at the Large Hadron Collider. Events with top quark pairsignatures are selected in the dilepton final state, requiring exactly two charged leptons and atleast two jets with at least one of the jets identified as likely to contain a b-hadron. The mea-sured distributions are corrected for detector effects and selection efficiency to cross-sectionsat the parton level. The differential cross-sections are compared with different Monte Carlogenerators and theoretical calculations of t t  ̄ production. The results are consistent with themajority of predictions in a wide kinematic range.

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