Konstantinidis, Nikolaos;
ATLAS Collaboration;
(2023)
Evidence of pair production of longitudinally polarised
vector bosons and study of CP properties in ZZ - 4ℓ
events with the ATLAS detector at √s = 13 TeV.
The Journal of High Energy Physics
, 2023
, Article 107. 10.1007/JHEP12(2023)107.
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Abstract
A study of the polarisation and CP properties in ZZ production is presented. The used data set corresponds to an integrated luminosity of 140 fb−1 of proton-proton collisions at a centre-of-mass energy of 13 TeV recorded by the ATLAS detector at the Large Hadron Collider. The ZZ candidate events are reconstructed using two same-favour opposite-charge electron or muon pairs. The production of two longitudinally polarised Z bosons is measured with a signifcance of 4.3 standard deviations, and its cross-section is measured in a fducial phase space to be 2.45 ± 0.60 fb, consistent with the next-to-leadingorder Standard Model prediction. The inclusive diferential cross-section as a function of a CP-sensitive angular observable is also measured. The results are used to constrain anomalous CP-odd neutral triple gauge couplings.
| Type: | Article |
|---|---|
| Title: | Evidence of pair production of longitudinally polarised vector bosons and study of CP properties in ZZ - 4ℓ events with the ATLAS detector at √s = 13 TeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/JHEP12(2023)107 |
| Publisher version: | https://doi.org/10.1007/JHEP12(2023)107 |
| Language: | English |
| Additional information: | Open Access . This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. |
| Keywords: | Electroweak Interaction, Hadron-Hadron Scattering, Vector Boson Production |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10185357 |
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