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Observation of WZγ Production in pp Collisions at √s=13 TeV with the ATLAS Detector
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ATLAS Collaboration (Including: Becker, K., Guilloton, E., Harrison, P. F., Kerridge, B. P., Martin, T. A., Mitra, A., Murray, W. J., Pollard, C. S., Potamianos, K., Roberts, B. A. and Vladimirov, V. E.). (2024) Observation of WZγ Production in pp Collisions at √s=13 TeV with the ATLAS Detector. Physical Review Letters, 132 . 021802 . doi:10.1103/PhysRevLett.132.021802 ISSN 0031-9007.
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Official URL: https://doi.org/10.1103/PhysRevLett.132.021802
Abstract
This Letter reports the observation of WZγ production and a measurement of its cross section using 140.1±1.2 fb−1 of proton-proton collision data recorded at a center-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. The WZγ production cross section, with both the W and Z bosons decaying leptonically, pp→WZγ→
ℓ′±νℓ+ℓ−γ (ℓ(′)=e, μ), is measured in a fiducial phase-space region defined such that the leptons and the photon have high transverse momentum and the photon is isolated. The cross section is found to be
2.01±0.30(stat)±0.16(syst) fb. The corresponding standard model predicted cross section calculated at next-to-leading order in perturbative quantum chromodynamics and at leading order in the electroweak coupling constant is 1.50±0.06 fb. The observed significance of the
WZγ signal is 6.3σ, compared with an expected significance of
5.0σ
Item Type: | Journal Article | ||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
Journal or Publication Title: | Physical Review Letters | ||||||
Publisher: | American Physical Society | ||||||
ISSN: | 0031-9007 | ||||||
Official Date: | 12 January 2024 | ||||||
Dates: |
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Volume: | 132 | ||||||
Article Number: | 021802 | ||||||
DOI: | 10.1103/PhysRevLett.132.021802 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||
Date of first compliant deposit: | 2 April 2024 | ||||||
Date of first compliant Open Access: | 2 April 2024 |
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