Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.11851/9301
Title: | Measurement of the Z(-> l(+)l(-))gamma production cross-section in pp collisions at root s=13 TeV with the ATLAS detector | Authors: | Aad, G. Abbott, B. Abbott, D. C. Abud, A. Abeling, K. Abhayasinghe, D. K. Bourdarios, Adam C. |
Keywords: | Hadron-Hadron scattering (experiments) Gauge-Boson Couplings Z-Gamma Production Electroweak Corrections Zz-Gamma |
Publisher: | Springer | Abstract: | The production of a prompt photon in association with a Z boson is studied in proton-proton collisions at a centre-of-mass energy s = 13 TeV. The analysis uses a data sample with an integrated luminosity of 139 fb(-1) collected by the ATLAS detector at the LHC from 2015 to 2018. The production cross-section for the process pp -> l(+)l(-)gamma + X (l = e, mu) is measured within a fiducial phase-space region defined by kinematic requirements on the photon and the leptons, and by isolation requirements on the photon. An experimental precision of 2.9% is achieved for the fiducial cross-section. Differential cross-sections are measured as a function of each of six kinematic variables characterising the l(+)l(-)gamma system. The data are compared with theoretical predictions based on next-to-leading-order and next-to-next-to-leading-order perturbative QCD calculations. The impact of next-to-leading-order electroweak corrections is also considered. | URI: | https://doi.org/10.1007/JHEP03(2020)054 https://hdl.handle.net/20.500.11851/9301 |
ISSN: | 1029-8479 |
Appears in Collections: | Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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