Production of three isolated photons in the parton Reggeization approach at high energies

Abstract

We study a large-$p_T$ three-photon production in proton-proton collisions at the LHC. We use the leading order (LO) approximation of the parton Reggeization approach consistently merged with the next-to-leading order corrections originated from the emission of additional jet. For numerical calculations we use the parton-level generator KaTie and modified KMR-type unintegrated parton distribution functions which satisfy exact normalization conditions for arbitrary $x$. We compare our prediction with data from ATLAS collaboration at the center-of-mass energy $\sqrt{s}=8$ TeV. We find that the inclusion of the real next-to-leading-order corrections leads to a good agreement between our predictions and data with the same accuracy as for the next-to-next-to-leading calculations based on the collinear parton model of QCD. At higher energies ($\sqrt{s}=13$ and 27 TeV) parton Reggeization approach predicts larger cross sections, up to $\sim 15$ \% and $\sim 30$ \%, respectively.

arXiv comment22 pages, 6 figures, 2 tables

References in corpus (41)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Generating Feynman Diagrams and Amplitudes with FeynArts 3
• Isolated photons in perturbative QCD
• Unintegrated parton distributions
• High-Energy Factorization and Small-X Deep Inelastic Scattering Beyond Leading Order
• Gauge invariant effective action for high-energy processes in QCD
• Diphoton production at hadron colliders: a fully-differential QCD calculation at NNLO
• A full Next to Leading Order study of direct photon pair production in hadronic collisions
• Unintegrated parton distributions and inclusive jet production at HERA
• Feynman rules for effective Regge action
• Predictions for diphoton production at the LHC through NNLO in QCD
• Measurement of isolated-photon pair production in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Collinear and TMD parton densities from fits to precision DIS measurements in the parton branching method
• Quasi-multi-Regge Processes with a Quark Exchange in the t-channel
• Triphoton production at hadron colliders in NNLO QCD
• NNLO QCD corrections to three-photon production at the LHC
• Helicity amplitudes for high-energy scattering
• Collinear and TMD Quark and Gluon Densities from Parton Branching Solution of QCD Evolution Equations
• Dijet azimuthal decorrelations at the LHC in the parton Reggeization approach
• Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at sqrt(s) = 7 TeV
• Scattering amplitudes with off-shell quarks
• $B\bar{B}$ angular correlations at the LHC in parton Reggeization approach merged with higher-order matrix elements
• On the one-loop calculations with Reggeized quarks
• Prompt J/psi production in the Regge limit of QCD: From Tevatron to LHC
• Four-jet production in single- and double-parton scattering within high-energy factorization
• Computing one-loop corrections to effective vertices with two scales in the EFT for Multi-Regge processes in QCD
• Measurement of the cross section for prompt isolated diphoton production using the full CDF Run II data sample
• High-Energy Factorization for Drell-Yan process in $pp$ and $p\bar{p}$ collisions with new Unintegrated PDFs
• Triphoton production at hadron colliders
• Measurement of the production cross section of three isolated photons in $pp$ collisions at $\sqrt{s}$ = 8 TeV using the ATLAS detector
• Single jet and prompt-photon inclusive production with multi-Regge kinematics: From Tevatron to LHC
• Measurement of the Cross Section for Prompt Isolated Diphoton Production in p\bar p Collisions at \sqrt{s} = 1.96 TeV
• Consistent treatment of charm production in higher-orders at tree-level within $k_T$-factorization approach
• Double prompt $J/\psi$ hadroproduction in the parton Reggeization approach with high-energy resummation
• New mechanisms for double charmed meson production at the LHCb
• Diphoton production at Tevatron and the LHC in the NLO* approximation of the Parton Reggeization Approach
• Towards stability of NLO corrections in High-Energy Factorization via Modified Multi-Regge Kinematics approximation
• B-meson production in the Parton Reggeization Approach at Tevatron and the LHC
• Large-p_T production of D mesons at the LHCb in the parton Reggeization approach
• Three-photon productions within the $k_t$-factorization for the ATLAS-LHC data
• Angular decorrelations in $\gamma +2jet$ events at high energies in the parton Reggeization approach