2020年3月1日
Measurement of the Z(→ ℓ + ℓ −)γ production cross-section in pp collisions at √s = 13 TeV with the ATLAS detector
Journal of High Energy Physics
- 巻
- 2020
- 号
- 3
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1007/JHEP03(2020)054
© 2020, The Author(s). 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−γ + X (ℓ = e, μ) 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−γ 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. [Figure not available: see fulltext.].
- リンク情報
- ID情報
-
- DOI : 10.1007/JHEP03(2020)054
- ISSN : 1126-6708
- eISSN : 1029-8479
- SCOPUS ID : 85081744973