Quarkonium Production in an Improved Color Evaporation Model

Abstract

We propose an improved version of the color evaporation model to describe heavy quarkonium production. In contrast to the traditional color evaporation model, we impose the constraint that the invariant mass of the intermediate heavy quark-antiquark pair to be larger than the mass of produced quarkonium. We also introduce a momentum shift between heavy quark-antiquark pair and the quarkonium. Numerical calculations show that our model can describe the charmonium yields as well as ratio of ${\psi }^{\prime }$ over $J/\psi$ better than the traditional color evaporation model.

arXiv comment6 pages, 4 figures

References in corpus (20)

• Rigorous QCD Analysis of Inclusive Annihilation and Production of Heavy Quarkonium
• New parton distributions for collider physics
• Heavy quarkonium: progress, puzzles, and opportunities
• QCD Predictions for Charm and Bottom Production at RHIC
• Color-Octet Fragmentation and the psi' Surplus at the Tevatron
• Measurement of J/psi production in pp collisions at sqrt(s)=7 TeV
• J/psi polarization at hadron colliders in nonrelativistic QCD
• J/psi (psi') production at the Tevatron and LHC at O(α_s^4v^4) in nonrelativistic QCD
• Reconciling J/psi production at HERA, RHIC, Tevatron, and LHC with NRQCD factorization at next-to-leading order
• Polarization for Prompt J/psi, psi(2s) production at the Tevatron and LHC
• Fragmentation contributions to J/psi production at the Tevatron and the LHC
• Comprehensive description of $J/\psi$ production in proton-proton collisions at collider energies
• QCD radiative corrections to ${\chi }_{cJ}$ production at hadron colliders
• Narrowing the uncertainty on the total charm cross section and its effect on the J/ψ cross section
• Ground and excited charmonium state production in p+p collisions at sqrt(s)=200 GeV
• Impact of ${\eta }_c$ hadroproduction data on charmonium production and polarization within NRQCD framework
• QCD radiative correction to color-octet $J/\psi$ inclusive production at B Factories
• Quarkonium production in the LHC era: a polarized perspective
• ${\eta }_c$ production at LHC and indications on the understanding of $J/\psi$ production
• NRQCD Factorization and Velocity-dependence of NNLO Poles in Heavy Quarkonium Production

Cited by in corpus (56)

• New Observables in Inclusive Production of Quarkonia
• On the mechanism of $T_{4c}(6900)$ tetraquark production
• The Present and Future of QCD
• Measurement of the J/$\psi$ polarization with respect to the event plane in Pb-Pb collisions at the LHC
• An experimental review of open heavy flavor and quarkonium production at RHIC
• Production and polarization of prompt $J/\psi$ in the improved color evaporation model using the $k_T$-factorization approach
• Event engineering studies for heavy flavor production and hadronization in high multiplicity hadron-hadron and hadron-nucleus collisions
• $\psi (2S)$ versus $J/\psi$ suppression in proton-nucleus collisions from factorization violating soft color exchanges
• Fully-heavy tetraquark production by $\gamma \gamma$ interactions in hadronic collisions at the LHC
• Indication for Double Parton Scatterings in W + Prompt J/Psi Production at the LHC
• $J/\psi$ polarization in the CGC+NRQCD approach
• Complete NLO QCD study of single- and double-quarkonium hadroproduction in the colour-evaporation model at the Tevatron and the LHC
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• Inclusive J/$\psi$ production at mid-rapidity in pp collisions at $\sqrt{s}$ = 5.02 TeV
• Polarization of prompt $J/\psi$ and ${\rm Y}$(1S) production in the color evaporation model
• Heavy Flavor Azimuthal Correlations in Cold Nuclear Matter
• Production and polarization of direct $J/\psi$ to $\mathcal{O}({\alpha }_s^3)$ in the improved color evaporation model in collinear factorization
• New factorization theory for heavy quarkonium production and decay
• Polarized Heavy Quarkonium Production in the Color Evaporation Model
• $J/\psi$-meson production within improved color evaporation model with the $k_T$-factorization approach for $c\bar{c}$ production
• Production and polarization of prompt ${\rm Y}$($n$S) in the improved color evaporation model using the $k_T$-factorization approach
• Limits on Intrinsic Charm Production from the SeaQuest Experiment
• Prompt and non-prompt J/$\psi$ production cross sections at midrapidity in proton-proton collisions at $\sqrt{s}$ = 5.02 and 13 TeV
• $J/\psi$ polarization in high multiplicity $pp$ and $pA$ collisions: CGC+NRQCD approach
• Single and pair $J/\psi$ production in the Improved Color Evaporation Model using the Parton Reggeization Approach
• Prospects for quarkonium studies at the high-luminosity LHC
• Prompt inclusive production of $J/\psi$, ${\psi }^{\prime }$ and ${\chi }_c$ mesons at the LHC in forward directions within the NRQCD $k_t$-factorization approach - search for the onset of gluon saturation
• Matching next-to-leading-order and high-energy-resummed calculations of heavy-quarkonium-hadroproduction cross sections
• Measurements of the transverse-momentum-dependent cross sections of $J/\psi$ production at mid-rapidity in proton+proton collisions at $\sqrt{s}=$ 510 and 500 GeV with the STAR detector
• Measurement of inclusive J/$\psi$ polarization in p+p collisions at $\sqrt{s}$ = 200 GeV by the STAR experiment
• Inclusive J/$\psi$ production at midrapidity in pp collisions at $\sqrt{s}=13$ TeV
• Energy Dependence of Intrinsic Charm Production: What is the Best Energy for Observation?
• Measurement of cold nuclear matter effects for inclusive $J/\psi$ in $p$+Au collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}$ = 200 GeV
• Multiparticle Production at Mid-Rapidity in the Color-Glass Condensate
• Measurement of the production cross-section of $J/\psi$ and $\psi (2$S$)$ mesons in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Shedding Light on Hadronization by Quarkonium Energy Correlator
• Diffractive quarkonium photoproduction in $pp$ and $pA$ collisions at the LHC: Predictions of the Resolved Pomeron model for the Run 2 energies
• Associated production of heavy quarkonium and $D-$meson in the improved color evaporation model with KaTie
• Inclusive diffractive heavy quarkonium photoproduction in pp, pA and AA collisions
• Estimates for the single-spin asymmetries in $p^{\uparrow }p\to J/\psi X$ process at PHENIX RHIC and SPD NICA
• Quarkonium polarization in Pb+Pb collisions in the improved color evaporation model
• Multiplicity Dependence of J/$\psi$ Production and QCD Dynamics in $p+p$ Collisions at $\sqrt{s}$ = 13 TeV
• Investigating the Transverse Single Spin Asymmetry in the Inelastic $J/\Psi$ photoproduction in $p^{\uparrow }p$ and $p^{\uparrow }A$ collisions
• Quarkonium: a theory overview
• Contribution from Intrinsic Charm Production to Fixed-Target Interactions at the LHC
• Associated production of $J/\psi$ and direct photon in the NRQCD and the ICEM using the high-energy factorization
• Photoproduction of $J/\psi$ with forward hadron tagging in hadronic collisions
• Measurements of charmonium production in p$+$p, p$+$Au, and Au$+$Au collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}$~=~200~GeV with the STAR experiment
• Unified framework for heavy flavor and quarkonium production in high multiplicity p+p and p+A collisions at RHIC and LHC
• Associated production of $J/\psi$ plus $Z(W)$ in the improved color evaporation model using the parton Reggeization approach
• Phenomenological study for the search of evidence for intrinsic charm at the COMPASS experiment
• $J/\psi$ production at NLO with a scale-dependent color-evaporation model
• J/$\psi$-hadron correlations at midrapidity in pp collisions at $\sqrt{s}$ = 13 TeV
• Charmonium pair production at the LHCb in the ICEM using the $k_T$-factorization: DPS versus SPS
• $J/\psi$ photoproduction and polarization in $e+p$ collisions in the improved color evaporation model
• The Hadronization Impact on $J/\psi$ Energy Correlators: A Pythia8 Study from Partonic to Hadronic Observables