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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; Åkesson, Torsten LU ; Bocchetta, Simona LU ; Bryngemark, Lene LU ; Corrigan, Eric LU ; Doglioni, Caterina LU ; Gregersen, Kristian LU ; Brottmann Hansen, Eva LU and Hedberg, Vincent LU , et al. (2019) In Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 790. p.595-614
Abstract
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<m 4ℓ <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 DPS =0.042, which results in an estimated lower limit on the effective cross section at 95% confidence level of 1.0 mb. © 2019 The Author(s)
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Contribution to journal
publication status
published
subject
keywords
Double Drell–Yan, Double parton-scattering, Four-lepton production, Higgs golden decay channel
in
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
790
pages
20 pages
publisher
Elsevier
external identifiers
  • scopus:85061429419
ISSN
0370-2693
DOI
10.1016/j.physletb.2019.01.062
language
English
LU publication?
yes
id
f9e97b48-62e9-41d7-91b9-c0f864759a3e
date added to LUP
2019-02-21 08:27:24
date last changed
2019-03-19 04:05:52
@article{f9e97b48-62e9-41d7-91b9-c0f864759a3e,
  abstract     = {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&lt;m 4ℓ &lt;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 DPS =0.042, which results in an estimated lower limit on the effective cross section at 95% confidence level of 1.0 mb. © 2019 The Author(s)},
  author       = {,  and Aaboud, M and Åkesson, Torsten and Bocchetta, Simona and Bryngemark, Lene and Corrigan, Eric and Doglioni, Caterina and Gregersen, Kristian and Brottmann Hansen, Eva and Hedberg, Vincent and Jarlskog, Göran and Kalderon, Charles and Kellermann, Edgar and Konya, Balazs and Lytken, Else and Mankinen, Katja and Marcon, Caterina and Mjörnmark, Ulf and Mullier, Geoffrey and Pöttgen, Ruth and Poulsen, Trine and Smirnova, Oxana and Zwalinski, L},
  issn         = {0370-2693},
  keyword      = {Double Drell–Yan,Double parton-scattering,Four-lepton production,Higgs golden decay channel},
  language     = {eng},
  pages        = {595--614},
  publisher    = {Elsevier},
  series       = {Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics},
  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},
  url          = {http://dx.doi.org/10.1016/j.physletb.2019.01.062},
  volume       = {790},
  year         = {2019},
}