Artículo

Study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at s√= 8 TeV with the ATLAS detector

Aaboud, M.; Aad, G.; Abbott, B.; Abdinov, O.; Abeloos, B.; Alconada Verzini, María JosefinaIcon ; Alonso, FranciscoIcon ; Arduh, Francisco AnuarIcon ; Dova, Maria TeresaIcon ; Hoya, JoaquínIcon ; Monticelli, Fernando GabrielIcon ; Orellana, Gonzalo EnriqueIcon ; Wahlberg, Hernan PabloIcon ; Bossio Sola, Jonathan DavidIcon ; Marceca, GinoIcon ; Otero y Garzon, Gustavo JavierIcon ; Piegaia, Ricardo NestorIcon ; Sacerdoti, SabrinaIcon ; 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
Fecha de publicación: 11/2018
Editorial: Elsevier Science
Revista: Physics Letters B
ISSN: 0370-2693
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:

Resumen

The inclusive production of four isolated charged leptons in pp collisions is analysed for the presence of hard double-parton scattering, using 20.2 fb−1 of data recorded in the ATLAS detector at the LHC at centre-of-mass energy s=8 TeV. In the four-lepton invariant-mass range of 80<m4ℓ<1000 GeV, an artificial neural network is used to enhance the separation between single- and double-parton scattering based on the kinematics of the four leptons in the final state. An upper limit on the fraction of events originating from double-parton scattering is determined at 95% confidence level to be fDPS=0.042 , which results in an estimated lower limit on the effective cross section at 95% confidence level of 1.0 mb.
Palabras clave: Atlas , High Energy Physics
 
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/84250
DOI: http://dx.doi.org/10.1016/j.physletb.2019.01.062
URL: https://www.sciencedirect.com/science/article/pii/S0370269319300875?via%3Dihub
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Articulos de INST.DE FISICA LA PLATA
Citación
Aaboud, M.; Aad, G.; Abbott, B.; Abdinov, O.; Abeloos, B.; et al.; Study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at s√= 8 TeV with the ATLAS detector; Elsevier Science; Physics Letters B; 790; 11-2018; 595-614
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