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

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<sup>−1</sup> of data recorded in the ATLAS detector at the LHC at centre-of-mass energy √s = 8 TeV. In the four-lepton invariant-mass ra...

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Detalles Bibliográficos
Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Hoya, Joaquín, Monticelli, Fernando Gabriel, Orellana, Gonzalo, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2019
Materias:
Ciencias Exactas
Física
Four-lepton production
Double Drell–Yan
Double parton-scattering
Higgs golden decay channel
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/79877
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-79877
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
Four-lepton production
Double Drell–Yan
Double parton-scattering
Higgs golden decay channel
spellingShingle Ciencias Exactas
Física
Four-lepton production
Double Drell–Yan
Double parton-scattering
Higgs golden decay channel
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Orellana, Gonzalo
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at √s = 8 TeV with the ATLAS detector
topic_facet Ciencias Exactas
Física
Four-lepton production
Double Drell–Yan
Double parton-scattering
Higgs golden decay channel
description 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<sup>−1</sup> 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 < m <sub>4ℓ</sub> < 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 f<sub>DPS</sub> = 0.042, which results in an estimated lower limit on the effective cross section at 95% confidence level of 1.0 mb.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Orellana, Gonzalo
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Orellana, Gonzalo
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at √s = 8 TeV with the ATLAS detector
title_short Study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at √s = 8 TeV with the ATLAS detector
title_full Study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at √s = 8 TeV with the ATLAS detector
title_fullStr Study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at √s = 8 TeV with the ATLAS detector
title_full_unstemmed Study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at √s = 8 TeV with the ATLAS detector
title_sort study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at √s = 8 tev with the atlas detector
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/79877
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