Measurements of four-lepton production in pp collisions at √s=8 TeV with the ATLAS detector
(2016) In Physics Letters B 753. p.552-572- Abstract
- The four-lepton (4ℓ, ℓ=e,μ) production cross section is measured in the mass range from 80 to 1000 GeV using 20.3 fb−1 of data in pp collisions at s=8 TeV collected with the ATLAS detector at the LHC. The 4ℓ events are produced in the decays of resonant Z and Higgs bosons and the non-resonant ZZ continuum originating from qq¯, gg, and qg initial states. A total of 476 signal candidate events are observed with a background expectation of 26.2±3.6 events, enabling the measurement of the integrated cross section and the differential cross section as a function of the invariant mass and transverse momentum of the four-lepton system. In the mass range above 180 GeV, assuming the theoretical constraint on the qq¯ production cross section... (More)
- The four-lepton (4ℓ, ℓ=e,μ) production cross section is measured in the mass range from 80 to 1000 GeV using 20.3 fb−1 of data in pp collisions at s=8 TeV collected with the ATLAS detector at the LHC. The 4ℓ events are produced in the decays of resonant Z and Higgs bosons and the non-resonant ZZ continuum originating from qq¯, gg, and qg initial states. A total of 476 signal candidate events are observed with a background expectation of 26.2±3.6 events, enabling the measurement of the integrated cross section and the differential cross section as a function of the invariant mass and transverse momentum of the four-lepton system. In the mass range above 180 GeV, assuming the theoretical constraint on the qq¯ production cross section calculated with perturbative NNLO QCD and NLO electroweak corrections, the signal strength of the gluon-fusion component relative to its leading-order prediction is determined to be μgg=2.4±1.0 (stat.)±0.5 (syst.)±0.8 (theory). © 2015 CERN for the benefit of the ATLAS Collaboration (Less)
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- author
- author collaboration
- organization
- publishing date
- 2016
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physics Letters B
- volume
- 753
- pages
- 552 - 572
- publisher
- Elsevier
- external identifiers
-
- scopus:85042561006
- ISSN
- 0370-2693
- DOI
- 10.1016/j.physletb.2015.12.048
- language
- English
- LU publication?
- yes
- additional info
- Cited By :8 Export Date: 23 May 2018
- id
- 092cde55-bc51-4cea-b419-fb7fae1f2e5a
- date added to LUP
- 2018-05-23 16:19:14
- date last changed
- 2023-04-08 12:35:28
@article{092cde55-bc51-4cea-b419-fb7fae1f2e5a, abstract = {{The four-lepton (4ℓ, ℓ=e,μ) production cross section is measured in the mass range from 80 to 1000 GeV using 20.3 fb−1 of data in pp collisions at s=8 TeV collected with the ATLAS detector at the LHC. The 4ℓ events are produced in the decays of resonant Z and Higgs bosons and the non-resonant ZZ continuum originating from qq¯, gg, and qg initial states. A total of 476 signal candidate events are observed with a background expectation of 26.2±3.6 events, enabling the measurement of the integrated cross section and the differential cross section as a function of the invariant mass and transverse momentum of the four-lepton system. In the mass range above 180 GeV, assuming the theoretical constraint on the qq¯ production cross section calculated with perturbative NNLO QCD and NLO electroweak corrections, the signal strength of the gluon-fusion component relative to its leading-order prediction is determined to be μgg=2.4±1.0 (stat.)±0.5 (syst.)±0.8 (theory). © 2015 CERN for the benefit of the ATLAS Collaboration}}, author = {{Aad, G and Abbott, B. and Abdallah, J. and Abdinov, O and Aben, R and Abolins, M and Åkesson, Torsten and Bocchetta, Simona and Bryngemark, Lene and Doglioni, Caterina and Floderus, Anders and Hawkins, Anthony and Hedberg, Vincent and Ivarsson, Jenny and Jarlskog, Göran and Lytken, Else and Mjörnmark, Ulf and Smirnova, Oxana and Viazlo, Oleksandr}}, issn = {{0370-2693}}, language = {{eng}}, pages = {{552--572}}, publisher = {{Elsevier}}, series = {{Physics Letters B}}, title = {{Measurements of four-lepton production in pp collisions at √s=8 TeV with the ATLAS detector}}, url = {{http://dx.doi.org/10.1016/j.physletb.2015.12.048}}, doi = {{10.1016/j.physletb.2015.12.048}}, volume = {{753}}, year = {{2016}}, }