On the mechanisms of heavy-quarkonium hadroproduction

Abstract

We discuss the various mechanisms potentially at work in hadroproduction of heavy quarkonia in the light of computations of higher-order QCD corrections both in the Colour-Singlet (CS) and Colour-Octet (CO) channels and the inclusion of the contribution arising from the s-channel cut in the CS channel. We also discuss new observables meant to better discriminate between these different mechanisms.

Invited review talk at 3rd International Conference On Hard And Electromagnetic Probes Of High-Energy Nuclear Collisions (HP2008), 8-14 June 2008, Illa da Toxa, Galicia, Spain. 11 pages, 21 figures, LaTeX, uses svjour.cls and svepj.clo (included)

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• Upsilon production at the Tevatron and the LHC
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• Bottomonium Production in the Regge Limit of QCD
• Color Transfer in Associated Heavy-Quarkonium Production
• Perspectives on heavy-quarkonium production at the LHC
• Inclusive production of $J/\psi$ meson in proton-proton collisions at BNL RHIC
• Color Transfer Enhancement for Heavy Quarkonium Production
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• Heavy quarkonium: progress, puzzles, and opportunities
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• QCD radiative corrections to ${\chi }_{cJ}$ production at hadron colliders
• Measurement of prompt J/psi and beauty hadron production cross sections at mid-rapidity in pp collisions at sqrt(s) = 7 TeV
• Observation and measurements of the production of prompt and non-prompt $J/\psi$ mesons in association with a $Z$ boson in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Measurements of $\psi (2S)$ and $X(3872)\to J/\psi {\pi }^{+}{\pi }^{-}$ production in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Revisiting scaling properties of medium-induced gluon radiation
• Production of psi(2S) Mesons in ppbar Collisions at 1.96 TeV
• Quarkonium Physics at a Fixed-Target Experiment using the LHC Beams
• Real next-to-next-to-leading-order QCD corrections to J/psi and Upsilon hadroproduction in association with a photon
• Diffractive semi-hard production of a $J/\psi$ or a ${\rm Y}$ from single-parton fragmentation plus a jet in hybrid factorization
• Large-P_T inclusive photoproduction of J/psi in electron-proton collisions at HERA and the EIC
• Measurement of the production cross-section of $\psi (2S)\to J/\psi (\to {\mu }^{+}{\mu }^{-}){\pi }^{+}{\pi }^{-}$ in $pp$ collisions at $\sqrt{s}=7$ TeV at ATLAS
• Measurement of the ${\rm Y}$ polarizations in $pp$ collisions at $\sqrt{s}$=7 and 8TeV
• Phenomenological NLO analysis of eta(c) production at the LHC in the collider and fixed-target modes
• Revisiting NLO QCD corrections to total inclusive J/psi and Upsilon photoproduction cross sections in lepton-proton collisions
• Curing the unphysical behaviour of NLO quarkonium production at the LHC and its relevance to constrain the gluon PDF at low scales
• Vector quarkonia at the LHC with JETHAD: A high-energy viewpoint
• Angular distribution and rotations of frame in vector meson decays into lepton pairs
• Measurement of the polarizations of prompt and non-prompt J/$\psi$ and $\psi$(2S) mesons produced in pp collisions at $\sqrt{s}$ = 13 TeV
• $J/\psi$ and $\psi$(2S) polarization in proton-proton collisions at energies available at the CERN Large Hadron Collider using PYTHIA8
• Measurements of $\psi (2S)$ and ${\chi }_{c1}(3872)$ production within fully reconstructed jets
• Review of Physics Results from the Tevatron: Heavy Flavor Physics
• SSA in electroproduction of $J/\psi$ and QCD-evolved TMD's
• ${\rm Y}$ electroproduction at HERA, EIC, and LHeC within the nonrelativistic QCD framework
• Automated event generation for S-wave quarkonium and leptonium production in NRQCD and NRQED