Beck, H.P.; Chatterjee, M.; Dal Santo, D.; Halser, L.; Mobius, S.; Müller, R.; O'Neill, A.P.; Schefer, M.M.; Weber, M.S. (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. Journal of High Energy Physics, 2023(12) Springer 10.1007/JHEP12(2023)107
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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-flavour opposite-charge electron or muon pairs. The production of two longitudinally polarised Z bosons is measured with a significance of 4.3 standard deviations, and its cross-section is measured in a fiducial phase space to be 2.45 ± 0.60 fb, consistent with the next-to-leading-order Standard Model prediction. The inclusive differential 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.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP) 10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) |
UniBE Contributor: |
Beck, Hans Peter, Chatterjee, Meghranjana, Dal Santo, Daniele, Halser, Lea, Möbius, Silke, Müller, Roman, O'Neill, Aaron Paul, Schefer, Meinrad Moritz, Weber, Michele |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1029-8479 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
BORIS Import LHEP |
Date Deposited: |
31 Jan 2024 10:55 |
Last Modified: |
30 Jun 2024 02:19 |
Publisher DOI: |
10.1007/JHEP12(2023)107 |
Additional Information: |
Kollaboration - Es sind nur die Berner Autor*innen namentlich erwaehnt; the ATLAS collaboration |
Uncontrolled Keywords: |
Electroweak Interaction, Hadron-Hadron Scattering, Vector Boson Production |
BORIS DOI: |
10.48350/191804 |
URI: |
https://boris.unibe.ch/id/eprint/191804 |
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