Study of Z→llγ decays at s = 8 TeV with the ATLAS detector

Summary, in English

This paper presents a study of Z→llγ decays with the ATLAS detector at the Large Hadron Collider. The analysis uses a proton–proton data sample corresponding to an integrated luminosity of 20.2 fb-1 collected at a centre-of-mass energy s = 8 TeV. Integrated fiducial cross-sections together with normalised differential fiducial cross-sections, sensitive to the kinematics of final-state QED radiation, are obtained. The results are found to be in agreement with state-of-the-art predictions for final-state QED radiation. First measurements of Z→llγγ decays are also reported. © The Author(s) 2024.

• Author: G. Aad; T.P.A. Åkesson; E.E. Corrigan; C. Doglioni; P.A. Ekman; J. Geisen; V. Hedberg; H. Herde; G. Jarlskog; B. Konya; E. Lytken; J.U. Mjörnmark; R. Poettgen; N.D. Simpson; E. Skorda; O. Smirnova; L. Zwalinski
• Department/s: Particle and nuclear physics; eSSENCE: The e-Science Collaboration; Department of Physics
• Publishing year: 2024
• Language: English
• Publication/Series: European Physical Journal C
• Volume: 84
• Issue: 2
• Links: http://dx.doi.org/10.1140/epjc/s10052-024-12471-9
• Document type: Journal article
• Publisher: Springer
• Topic: Subatomic Physics
• Keywords: High energy physics; A-center; ATLAS detectors; Center-of-mass energies; Centre-of-mass energies; Data sample; Final state; Integrated luminosity; Large Hadron Collider; Large-hadron colliders; State of the art; Tellurium compounds
• Status: Published
• ISBN/ISSN/Other: ISSN: 1434-6044