NLO QCD and electroweak corrections to Z + γ production with leptonic Z-boson decays
Please always quote using this URN: urn:nbn:de:bvb:20-opus-168766
- The next-to-leading-order electroweak corrections to pp→l\(^{+}\)l\(^{-}\)/ν¯¯¯ν+γ+X production, including all off-shell effects of intermediate Z bosons in the complex-mass scheme, are calculated for LHC energies, revealing the typically expected large corrections of tens of percent in the TeV range. Contributions from quark-photon and photon-photon initial states are taken into account as well, but their impact is found to be moderate or small. Moreover, the known next-to-leading-order QCD corrections are reproduced. In order to separate hardThe next-to-leading-order electroweak corrections to pp→l\(^{+}\)l\(^{-}\)/ν¯¯¯ν+γ+X production, including all off-shell effects of intermediate Z bosons in the complex-mass scheme, are calculated for LHC energies, revealing the typically expected large corrections of tens of percent in the TeV range. Contributions from quark-photon and photon-photon initial states are taken into account as well, but their impact is found to be moderate or small. Moreover, the known next-to-leading-order QCD corrections are reproduced. In order to separate hard photons from jets, both a quark-to-photon fragmentation function á la Glover/Morgan and Frixione’s cone isolation are employed. The calculation is available in the form of Monte Carlo programs allowing for the evaluation of arbitrary differential cross sections. Predictions for integrated cross sections are presented for the LHC at 7 TeV, 8 TeV, and 14 TeV, and differential distributions are discussed at 14 TeV for bare muons and dressed leptons. Finally, we consider the impact of anomalous ZZγ and Zγγ couplings.…
Author: | Ansgar Denner, Stefan Dittmaier, Markus Hecht, Christian Pasold |
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URN: | urn:nbn:de:bvb:20-opus-168766 |
Document Type: | Journal article |
Faculties: | Fakultät für Physik und Astronomie / Institut für Theoretische Physik und Astrophysik |
Language: | English |
Parent Title (English): | JOURNAL OF HIGH ENERGY PHYSICS |
Year of Completion: | 2016 |
Volume: | 02 |
Issue: | 057 |
Source: | JOURNAL OF HIGH ENERGY PHYSICS 02(2016)057. DOI: 10.1007/JHEP02(2016)057 |
DOI: | https://doi.org/10.1007/JHEP02(2016)057 |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Tag: | LHC; NLO computations; hadronic colliders |
Release Date: | 2020/12/03 |
Licence (German): | CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |