Study of $$Z \rightarrow ll\gamma $$ decays at $$\sqrt{s}$$ = 8 TeV with the ATLAS detector



Aad, G, Abbott, B, Abbott, DC, Abeling, K, Abidi, SH, Aboulhorma, A, Abramowicz, H, Abreu, H, Abulaiti, Y, Hoffman, AC Abusleme
et al (show 2922 more authors) (2024) Study of $$Z \rightarrow ll\gamma $$ decays at $$\sqrt{s}$$ = 8 TeV with the ATLAS detector. The European Physical Journal C, 84 (2). 195-.

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Abstract

<jats:title>Abstract</jats:title><jats:p>This paper presents a study of <jats:inline-formula><jats:alternatives><jats:tex-math>$$Z \rightarrow ll\gamma $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>Z</mml:mi> <mml:mo>→</mml:mo> <mml:mi>l</mml:mi> <mml:mi>l</mml:mi> <mml:mi>γ</mml:mi> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> 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<jats:inline-formula><jats:alternatives><jats:tex-math>$$^{-1}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula> collected at a centre-of-mass energy <jats:inline-formula><jats:alternatives><jats:tex-math>$$\sqrt{s}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math></jats:alternatives></jats:inline-formula> = 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 <jats:inline-formula><jats:alternatives><jats:tex-math>$$Z \rightarrow ll\gamma \gamma $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>Z</mml:mi> <mml:mo>→</mml:mo> <mml:mi>l</mml:mi> <mml:mi>l</mml:mi> <mml:mi>γ</mml:mi> <mml:mi>γ</mml:mi> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> decays are also reported.</jats:p>

Item Type: Article
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 05 Mar 2024 08:58
Last Modified: 15 Mar 2024 21:45
DOI: 10.1140/epjc/s10052-024-12471-9
Open Access URL: https://link.springer.com/article/10.1140/epjc/s10...
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3179099