Real next-to-next-to-leading-order QCD corrections to J/psi and Upsilon hadroproduction in association with a photon

Abstract

We update the study of the QCD corrections to direct J/psi and Upsilon hadroproduction in association with a photon in the QCD-based approach of the Colour-Singlet (CS) Model. After comparison with the recent full next-to-leading-order (NLO) computation for this process, we provide an independent confirmation to the inclusive case that NLO QCD corrections to quarkonium-production processes whose LO exhibits a non-leading P_T behaviour can be reliably computed at mid and large P_T by considering only the real emission contributions accompanied with a kinematical cut. In turn, we evaluate the leading part of the alpha^4_S alpha contributions, namely those coming from (J/psi,Upsilon)+gamma associated with two light partons. We find that they are dominant at mid and large P_T. This confirms our expectations from the leading P_T scaling of the new topologies appearing at NNLO. We obtain that the yield from the CS becomes one order of magnitude larger than the upper value of the potential Colour-Octet yield. The polarization of the 3S1 quarkonia produced in association with a photon is confirmed to be longitudinal at mid and large P_T.

arXiv comment7 pages, 13 figures, LaTeX, uses elsarticle.cls (included).v2: version (with minor text revisions) to appear in Phys.Lett. B

References in corpus (40)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• Rigorous QCD Analysis of Inclusive Annihilation and Production of Heavy Quarkonium
• Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions
• Quarkonium Production at High-Energy Colliders
• QCD corrections to J/psi and Upsilon production at hadron colliders
• Upsilon production at the Tevatron and the LHC
• Polarizations of J/psi and psi(2S) Mesons Produced in ppbar Collisions at 1.96 TeV
• J/psi, psi' and Upsilon Production at Hadron Colliders: a review
• QCD corrections to J/psi polarization of hadronproduction at Tevatron and LHC
• On the mechanisms of heavy-quarkonium hadroproduction
• Hadroproduction of J/psi and Upsilon in association with a heavy-quark pair
• Production of Y(1S) Mesons from chib Decays in pp(bar) Collisions at sqrt(s)=1.8 TeV
• QCD corrections to J/psi production via color octet states at Tevatron and LHC
• QCD corrections to ${\mathbf{e}}^{+}{\mathbf{e}}^{-}\to \mathbf{J}/\mathbf{\psi gg}$ at B Factories
• Next-to-Leading-Order QCD Corrections to e^ + e^- -> J/ψ+gg at the B Factories
• QCD corrections to polarization of J/ψand Υat Fermilab Tevatron and CERN LHC
• Next-to-Leading-Order QCD corrections to J/ψ(Υ)+γproduction at the LHC
• Direct J/Psi hadroproduction in k_\perp-factorization and the color octet mechanism
• Measurement of the polarization of the ${\rm Y}(1S)$ and ${\rm Y}(2S)$ states in $p\bar{p}$ collisions at $\sqrt{s}=$1.96 TeV
• Analysis of charmonium production at fixed-target experiments in the NRQCD approach
• Possible solution of the J/psi production puzzle
• Measurement of inclusive differential cross sections for Upsilon(1S) production in p-pbar collisions at sqrt(s) = 1.96 TeV
• Automatic generation of quarkonium amplitudes in NRQCD
• Color Transfer in Associated Heavy-Quarkonium Production
• Transverse momentum distribution of Upsilon production in hadronic collisions
• Associated Production of Heavy Quarkonia and Electroweak Bosons at Present and Future Colliders
• New contributions to heavy-quarkonium production
• New Developments in MadGraph/MadEvent
• Perspectives on heavy-quarkonium production at the LHC
• Color-singlet direct J/ψand ψ' production at Tevatron in the k_t factorization approach
• Color-Octet Contributions in the Associate J/psi+gamma Hadroproduction
• Associated $J/\psi +\gamma$ production as a probe of the polarized gluon distribution
• Testing J/psi Production and Decay Properties in Hadronic Collisions
• J/psi+gamma production at the LHC
• Experimental Aspects of Heavy Quarkonium Production at the LHC
• Production and polarization of Upsilon mesons in the k_T-factorization approach in more detail
• J/Psi Decay Lepton Distribution in Hadronic Collisions
• QCD calculation of J/psi+gamma mass distributions

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