Measurements of four-lepton production in pp collisions at √s=8 TeV with the ATLAS detector

G Aad; B. Abbott; J. Abdallah; O Abdinov; R Aben; M Abolins; Torsten Åkesson; Simona Bocchetta; Lene Bryngemark; Caterina Doglioni; Anders Floderus; Anthony Hawkins; Vincent Hedberg; Jenny Ivarsson; Göran Jarlskog; Else Lytken; Ulf Mjörnmark; Oxana Smirnova; Oleksandr Viazlo; ATLAS Collaboration

doi:10.1016/j.physletb.2015.12.048

Measurements of four-lepton production in pp collisions at √s=8 TeV with the ATLAS detector

G Aad, B. Abbott, J. Abdallah, O Abdinov, R Aben, M Abolins, Torsten Åkesson, Simona Bocchetta, Lene Bryngemark, Caterina Doglioni, Anders Floderus, Anthony Hawkins, Vincent Hedberg, Jenny Ivarsson, Göran Jarlskog, Else Lytken, Ulf Mjörnmark, Oxana Smirnova, Oleksandr Viazlo, ATLAS Collaboration

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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

Original language	English
Pages (from-to)	552-572
Journal	Physics Letters B
Volume	753
DOIs	https://doi.org/10.1016/j.physletb.2015.12.048
Publication status	Published - 2016

Bibliographical note

Cited By :8

Export Date: 23 May 2018

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Subatomic Physics

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10.1016/j.physletb.2015.12.048Licence: CC BY

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Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Aben, R., Abolins, M., Åkesson, T., Bocchetta, S., Bryngemark, L., Doglioni, C., Floderus, A., Hawkins, A., Hedberg, V., Ivarsson, J., Jarlskog, G., Lytken, E., Mjörnmark, U., Smirnova, O., Viazlo, O., & ATLAS Collaboration (2016). Measurements of four-lepton production in pp collisions at √s=8 TeV with the ATLAS detector. Physics Letters B, 753, 552-572. https://doi.org/10.1016/j.physletb.2015.12.048

@article{092cde55bc514ceab419fb7fae1f2e5a,

title = "Measurements of four-lepton production in pp collisions at √s=8 TeV with the ATLAS detector",

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). {\textcopyright} 2015 CERN for the benefit of the ATLAS Collaboration",

author = "G Aad and B. Abbott and J. Abdallah and O Abdinov and R Aben and M Abolins and Torsten {\AA}kesson and Simona Bocchetta and Lene Bryngemark and Caterina Doglioni and Anders Floderus and Anthony Hawkins and Vincent Hedberg and Jenny Ivarsson and G{\"o}ran Jarlskog and Else Lytken and Ulf Mj{\"o}rnmark and Oxana Smirnova and Oleksandr Viazlo and {ATLAS Collaboration}",

note = "Cited By :8 Export Date: 23 May 2018",

year = "2016",

doi = "10.1016/j.physletb.2015.12.048",

language = "English",

volume = "753",

pages = "552--572",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

}

Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Aben, R, Abolins, M, Åkesson, T, Bocchetta, S, Bryngemark, L , Doglioni, C, Floderus, A, Hawkins, A, Hedberg, V, Ivarsson, J, Jarlskog, G , Lytken, E, Mjörnmark, U, Smirnova, O, Viazlo, O & ATLAS Collaboration 2016, 'Measurements of four-lepton production in pp collisions at √s=8 TeV with the ATLAS detector', Physics Letters B, vol. 753, pp. 552-572. https://doi.org/10.1016/j.physletb.2015.12.048

TY - JOUR

T1 - Measurements of four-lepton production in pp collisions at √s=8 TeV with the ATLAS detector

AU - Aad, G

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdinov, O

AU - Aben, R

AU - Abolins, M

AU - Åkesson, Torsten

AU - Bocchetta, Simona

AU - Bryngemark, Lene

AU - Doglioni, Caterina

AU - Floderus, Anders

AU - Hawkins, Anthony

AU - Hedberg, Vincent

AU - Ivarsson, Jenny

AU - Jarlskog, Göran

AU - Lytken, Else

AU - Mjörnmark, Ulf

AU - Smirnova, Oxana

AU - Viazlo, Oleksandr

AU - ATLAS Collaboration

N1 - Cited By :8 Export Date: 23 May 2018

PY - 2016

Y1 - 2016

N2 - 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

AB - 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

U2 - 10.1016/j.physletb.2015.12.048

DO - 10.1016/j.physletb.2015.12.048

M3 - Article

SN - 0370-2693

VL - 753

SP - 552

EP - 572

JO - Physics Letters B

JF - Physics Letters B

ER -

Measurements of four-lepton production in pp collisions at √s=8 TeV with the ATLAS detector

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