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Fiducial and differential cross-section measurements of electroweak $Wγjj$ production in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector

Published 5 Mar 2024 in hep-ex | (2403.02809v2)

Abstract: The observation of the electroweak production of a $W$ boson and a photon in association with two jets, using $pp$ collision data at the Large Hadron Collider at a centre of mass energy of $\sqrt{s}=13$ TeV, is reported. The data were recorded by the ATLAS experiment from 2015 to 2018 and correspond to an integrated luminosity of 140 fb${-1}$. This process is sensitive to the quartic gauge boson couplings via the vector boson scattering mechanism and provides a stringent test of the electroweak sector of the Standard Model. Events are selected if they contain one electron or muon, missing transverse momentum, at least one photon, and two jets. Multivariate techniques are used to distinguish the electroweak $W\gamma jj$ process from irreducible background processes. The observed significance of the electroweak $W\gamma jj$ process is well above six standard deviations, compared to an expected significance of 6.3 standard deviations. Fiducial and differential cross sections are measured in a fiducial phase space close to the detector acceptance, which are in reasonable agreement with leading order Standard Model predictions from $MadGraph5+Pythia8$ and $Sherpa$. The results are used to constrain new physics effects in the context of an effective field theory.

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References (65)
  1. O.J.P. Éboli, M.C. Gonzalez-Garcia and S.M. Lietti “Bosonic quartic couplings at CERN LHC” In Phys. Rev. D 69, 2004, pp. 095005 DOI: 10.1103/PhysRevD.69.095005
  2. “Classifying the bosonic quartic couplings” In Phys. Rev. D 93.9, 2016, pp. 093013 DOI: 10.1103/PhysRevD.93.093013
  3. “Isolating vector boson scattering at the CERN LHC: Gauge cancellations and the equivalent vector boson approximation versus complete calculations” In Phys. Rev. D 74.7 American Physical Society, 2006, pp. 073010 DOI: 10.1103/PhysRevD.74.073010
  4. CMS Collaboration “Observation of electroweak production of W⁢γ𝑊𝛾W\gammaitalic_W italic_γ with two jets in proton–proton collisions at s=13⁢TeV𝑠13TeV\sqrt{s}=13\,\text{TeV}square-root start_ARG italic_s end_ARG = 13 TeV” In Phys. Lett. B 811, 2020, pp. 135988 DOI: 10.1016/j.physletb.2020.135988
  5. CMS Collaboration “Measurement of the electroweak production of W⁢γ𝑊𝛾W\gammaitalic_W italic_γ in association with two jets in proton–proton collisions at s=13⁢TeV𝑠13TeV\sqrt{s}=13\,\text{TeV}square-root start_ARG italic_s end_ARG = 13 TeV” In Phys. Rev. D 108, 2023, pp. 032017 DOI: 10.1103/PhysRevD.108.032017
  6. T. Plehn, D. Rainwater and D. Zeppenfeld “Determining the Structure of Higgs Couplings at the LHC” In Phys. Rev. Lett. 88.051801, 2002 DOI: 10.1103/PhysRevLett.88.051801
  7. “Higgs plus two jet production via gluon fusion as a signal at the CERN LHC” In JHEP 0704.052, 2007 DOI: 10.1088/1126-6708/2007/04/052
  8. ATLAS Collaboration “The ATLAS Experiment at the CERN Large Hadron Collider” In JINST 3, 2008, pp. S08003 DOI: 10.1088/1748-0221/3/08/S08003
  9. ATLAS Collaboration “ATLAS Insertable B-Layer: Technical Design Report”, 2010 URL: https://cds.cern.ch/record/1291633
  10. B. Abbott “Production and integration of the ATLAS Insertable B-Layer” In JINST 13, 2018, pp. T05008 DOI: 10.1088/1748-0221/13/05/T05008
  11. G. Avoni “The new LUCID-2 detector for luminosity measurement and monitoring in ATLAS” In JINST 13, 2018, pp. P07017
  12. ATLAS Collaboration “Performance of the ATLAS trigger system in 2015” In Eur. Phys. J. C 77, 2017, pp. 317 DOI: 10.1140/epjc/s10052-017-4852-3
  13. ATLAS Collaboration “The ATLAS Collaboration Software and Firmware”, ATL-SOFT-PUB-2021-001, 2021 URL: https://cds.cern.ch/record/2767187
  14. Enrico Bothmann “Event generation with Sherpa 2.2” In SciPost Phys. 7.3, 2019, pp. 034 DOI: 10.21468/SciPostPhys.7.3.034
  15. “Comix, a new matrix element generator” In JHEP 12, 2008, pp. 039 DOI: 10.1088/1126-6708/2008/12/039
  16. “A parton shower algorithm based on Catani–Seymour dipole factorisation” In JHEP 03, 2008, pp. 038 DOI: 10.1088/1126-6708/2008/03/038
  17. “A critical appraisal of NLO+PS matching methods” In JHEP 09, 2012, pp. 049 DOI: 10.1007/JHEP09(2012)049
  18. “QCD matrix elements + parton showers. The NLO case” In JHEP 04, 2013, pp. 027 DOI: 10.1007/JHEP04(2013)027
  19. “QCD Matrix Elements + Parton Showers” In JHEP 11, 2001, pp. 063 DOI: 10.1088/1126-6708/2001/11/063
  20. “QCD matrix elements and truncated showers” In JHEP 05, 2009, pp. 053 DOI: 10.1088/1126-6708/2009/05/053
  21. NNPDF Collaboration and Richard D. Ball “Parton distributions for the LHC run II” In JHEP 04, 2015, pp. 040 DOI: 10.1007/JHEP04(2015)040
  22. “The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations” In JHEP 07, 2014, pp. 079 DOI: 10.1007/JHEP07(2014)079
  23. ATLAS Collaboration “ATLAS Pythia 8 tunes to 7⁢TeV7TeV7\leavevmode\nobreak\ \text{TeV}7 TeV data”, ATL-PHYS-PUB-2014-021, 2014 URL: https://cds.cern.ch/record/1966419
  24. D.J. Lange “The EvtGen particle decay simulation package” In Proceedings, 7th International Conference on B physics at hadron machines (BEAUTY 2000) 462, 2001, pp. 152 DOI: 10.1016/S0168-9002(01)00089-4
  25. S. Agostinelli “Geant4 – a simulation toolkit” In Nucl. Instrum. Meth. A 506, 2003, pp. 250 DOI: 10.1016/S0168-9002(03)01368-8
  26. T. Sjöstrand, S. Mrenna and P. Skands “A brief introduction to PYTHIA 8.1” In Comput. Phys. Commun. 178, 2008, pp. 852–867 DOI: 10.1016/j.cpc.2008.01.036
  27. NNPDF Collaboration and Richard D. Ball “Parton distributions with LHC data” In Nucl. Phys. B 867, 2013, pp. 244 DOI: 10.1016/j.nuclphysb.2012.10.003
  28. ATLAS Collaboration “The Pythia 8 A3 tune description of ATLAS minimum bias and inelastic measurements incorporating the Donnachie–Landshoff diffractive model”, ATL-PHYS-PUB-2016-017, 2016 URL: https://cds.cern.ch/record/2206965
  29. ATLAS Collaboration “Luminosity determination in p⁢p𝑝𝑝ppitalic_p italic_p collisions at s=13⁢TeV𝑠13TeV\sqrt{s}=13\,\text{TeV}square-root start_ARG italic_s end_ARG = 13 TeV using the ATLAS detector at the LHC” In Eur. Phys. J. C 83.982, 2023 DOI: 10.1140/epjc/s10052-023-11747-w
  30. ATLAS Collaboration “Performance of the ATLAS muon triggers in Run 2” In JINST 15, 2020, pp. P09015 DOI: 10.1088/1748-0221/15/09/p09015
  31. ATLAS Collaboration “Performance of electron and photon triggers in ATLAS during LHC Run 2” In Eur. Phys. J. C 80, 2020, pp. 47 DOI: 10.1140/epjc/s10052-019-7500-2
  32. ATLAS Collaboration “ATLAS data quality operations and performance for 2015–2018 data-taking” In JINST 15, 2020, pp. P04003 DOI: 10.1088/1748-0221/15/04/P04003
  33. ATLAS Collaboration “Vertex Reconstruction Performance of the ATLAS Detector at s=13⁢TeV𝑠13TeV\sqrt{s}=13\leavevmode\nobreak\ \text{TeV}square-root start_ARG italic_s end_ARG = 13 TeV”, ATL-PHYS-PUB-2015-026, 2015 URL: https://cds.cern.ch/record/2037717
  34. ATLAS Collaboration “Muon reconstruction and identification efficiency in ATLAS using the full Run 2 p⁢p𝑝𝑝ppitalic_p italic_p collision data set at s=13⁢TeV𝑠13TeV\sqrt{s}=13\,\text{TeV}square-root start_ARG italic_s end_ARG = 13 TeV” In Eur. Phys. J. C 81, 2021, pp. 578 DOI: 10.1140/epjc/s10052-021-09233-2
  35. ATLAS Collaboration “Electron and photon performance measurements with the ATLAS detector using the 2015–2017 LHC proton–proton collision data” In JINST 14, 2019, pp. P12006 DOI: 10.1088/1748-0221/14/12/P12006
  36. ATLAS Collaboration “Jet reconstruction and performance using particle flow with the ATLAS Detector” In Eur. Phys. J. C 77, 2017, pp. 466 DOI: 10.1140/epjc/s10052-017-5031-2
  37. Matteo Cacciari, Gavin P. Salam and Gregory Soyez “The anti-ktsubscript𝑘𝑡k_{t}italic_k start_POSTSUBSCRIPT italic_t end_POSTSUBSCRIPT jet clustering algorithm” In JHEP 04, 2008, pp. 063 DOI: 10.1088/1126-6708/2008/04/063
  38. ATLAS Collaboration “Performance of pile-up mitigation techniques for jets in p⁢p𝑝𝑝ppitalic_p italic_p collisions at s=8⁢TeV𝑠8TeV\sqrt{s}=8\,\text{TeV}square-root start_ARG italic_s end_ARG = 8 TeV using the ATLAS detector” In Eur. Phys. J. C 76, 2016, pp. 581 DOI: 10.1140/epjc/s10052-016-4395-z
  39. ATLAS Collaboration “Selection of jets produced in 13⁢TeV13TeV13\leavevmode\nobreak\ \text{TeV}13 TeV proton–proton collisions with the ATLAS detector”, ATLAS-CONF-2015-029, 2015 URL: https://cds.cern.ch/record/2037702
  40. ATLAS Collaboration “Optimisation and performance studies of the ATLAS b𝑏bitalic_b-tagging algorithms for the 2017-18 LHC run”, ATL-PHYS-PUB-2017-013, 2017 URL: https://cds.cern.ch/record/2273281
  41. ATLAS Collaboration “Performance of missing transverse momentum reconstruction with the ATLAS detector using proton–proton collisions at s=13⁢TeV𝑠13TeV\sqrt{s}=13\,\text{TeV}square-root start_ARG italic_s end_ARG = 13 TeV” In Eur. Phys. J. C 78, 2018, pp. 903 DOI: 10.1140/epjc/s10052-018-6288-9
  42. ATLAS Collaboration “Measurement of the inclusive isolated prompt photon cross section in p⁢p𝑝𝑝ppitalic_p italic_p collisions at s=7⁢TeV𝑠7TeV\sqrt{s}=7\,\text{TeV}square-root start_ARG italic_s end_ARG = 7 TeV with the ATLAS detector” In Phys. Rev. D 83, 2011, pp. 052005 DOI: 10.1103/PhysRevD.83.052005
  43. Gaiser, J. “Charmonium spectroscopy from radiative decays of J/Ψ𝐽ΨJ/\Psiitalic_J / roman_Ψ and Ψ′superscriptΨ′\Psi^{\prime}roman_Ψ start_POSTSUPERSCRIPT ′ end_POSTSUPERSCRIPT” In SLAC-R-255, 1982
  44. S., Bernstein “Proof of theorem of Weierstrass based on the calculus of probabilities” In Comm. Kharkov Math. Soc. 13, 1912, pp. 1–2
  45. ATLAS Collaboration “Measurement of the Z(→ℓ+ℓ−)γZ(\to\ell^{+}\ell^{-})\gammaitalic_Z ( → roman_ℓ start_POSTSUPERSCRIPT + end_POSTSUPERSCRIPT roman_ℓ start_POSTSUPERSCRIPT - end_POSTSUPERSCRIPT ) italic_γ production cross-section in p⁢p𝑝𝑝ppitalic_p italic_p collisions at s=13⁢TeV𝑠13TeV\sqrt{s}=13\,\text{TeV}square-root start_ARG italic_s end_ARG = 13 TeV with the ATLAS detector” In JHEP 03, 2020, pp. 054 DOI: 10.1007/JHEP03(2020)054
  46. Andrew L.Maas “Rectifier Nonlinearities Improve Neural Network Acoustic Models” In Proceedings of the 30th International Conference on Machine Learning 28.3, 2013
  47. “Adam: A Method for Stochastic Optimization”, 2014 arXiv:1412.6980 [hep-ex]
  48. ATLAS Collaboration “Differential cross-section measurements for the electroweak production of dijets in association with a Z𝑍Zitalic_Z boson in proton–proton collisions at ATLAS” In Eur. Phys. J. C 81, 2021, pp. 163 DOI: 10.1140/epjc/s10052-020-08734-w
  49. Roger Barlow “Extended maximum likelihood” In Nucl. Instrum. Meth. A 297, 1990, pp. 496–506 DOI: 10.1016/0168-9002(90)91334-8
  50. M. Tanabashi and (Particle Data Group) “Review of Particle Physics” In Phys. Rev. D 98.3, 2018, pp. 030001 DOI: 10.1103/PhysRevD.98.030001
  51. ATLAS Collaboration “Evaluating statistical uncertainties and correlations using the bootstrap method”, ATL-PHYS-PUB-2021-011, 2021 URL: https://cds.cern.ch/record/2759945
  52. Giulio D’Agostini “A multidimensional unfolding method based on Bayes’ theorem” In Nucl. Instrum. Meth. A 362.2, 1995, pp. 487–498 DOI: 10.1016/0168-9002(95)00274-X
  53. Tim Adye “Unfolding algorithms and tests using RooUnfold” In Proceedings, 2011 Workshop on Statistical Issues Related to Discovery Claims in Search Experiments and Unfolding (PHYSTAT 2011), pp. 313–318 DOI: 10.5170/CERN-2011-006.313
  54. “Asymptotic formulae for likelihood-based tests of new physics” In Eur. Phys. J. C 71, 2011, pp. 1554 DOI: 10.1140/epjc/s10052-011-1554-0
  55. ATLAS Collaboration “Jet energy scale and resolution measured in proton–proton collisions at s=13⁢TeV𝑠13TeV\sqrt{s}=13\,\text{TeV}square-root start_ARG italic_s end_ARG = 13 TeV with the ATLAS detector” In Eur. Phys. J. C 81, 2021, pp. 689 DOI: 10.1140/epjc/s10052-021-09402-3
  56. NNPDF Collaboration “Parton distributions from high-precision collider data” In Eur. Phys. J. C 77.663, 2017 DOI: 10.48550/arXiv.1706.00428
  57. T.-J. Hou “Progress in the CTEQ-TEA NNLO global QCD analysis”, 2019 arXiv:1908.11394 [hep-ph]
  58. “Parton distributions from LHC, HERA, Tevatron and fixed target data: MSHT20 PDFs” In Eur. Phys. J. C 81.341, 2021 DOI: 10.1140/epjc/s10052-021-09057-0
  59. Jon Butterworth “PDF4LHC recommendations for LHC Run II” In J. Phys. G 43, 2016, pp. 023001 DOI: 10.1088/0954-3899/43/2/023001
  60. A. Ballestrero “Precise predictions for same-sign W-boson scattering at the LHC” In Eur. Phys. J. C 78.8, 2018 DOI: 10.48550/arXiv.1803.07943
  61. S.S. Wilks “The Large-Sample Distribution of the Likelihood Ratio for Testing Composite Hypotheses” In Ann. Math. Statist. 9.1 The Institute of Mathematical Statistics, 1938, pp. 60–62 DOI: 10.1214/aoms/1177732360
  62. Eduardo da Silva Almeida, O.J.P. Éboli and M.C. Gonzalez-Garcia “Unitarity constraints on anomalous quartic couplings” In Phys. Rev. D 101.11, 2020, pp. 113003 DOI: 10.1103/PhysRevD.101.113003
  63. ATLAS Collaboration “ATLAS Computing Acknowledgements”, ATL-SOFT-PUB-2023-001, 2023 URL: https://cds.cern.ch/record/2869272
  64. ATLAS Collaboration, 2012 URL: https://cds.cern.ch/record/1451888
  65. In Eur. Phys. J. C 73, 2013, pp. 2501 DOI: 10.1140/epjc/s10052-013-2501-z
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