NRQCD analysis of charmonium production with pion and proton beams at fixed-target energies

Abstract

We present an analysis of hadroproduction of $J/\psi$ and $\psi (2S)$ at fixed-target energies in the framework of non-relativistic QCD (NRQCD). Using both pion- and proton-induced data, a new determination of the color-octet long-distance matrix elements (LDMEs) is obtained. Compared with previous results, the contributions from the $q\bar{q}$ and color-octet processes are significantly enhanced, especially at lower energies. A good agreement between the pion-induced $J/\psi$ production data and NRQCD calculations using the newly obtained LDMEs is achieved. We find that the pion-induced charmonium production data are sensitive to the gluon density of pions, and favor pion PDFs with relatively large gluon contents at large $x$.

20 pages, 6 figures, published version

References in corpus (31)

• Rigorous QCD Analysis of Inclusive Annihilation and Production of Heavy Quarkonium
• Heavy quarkonium: progress, puzzles, and opportunities
• LHAPDF6: parton density access in the LHC precision era
• New parton distribution functions from a global analysis of quantum chromodynamics
• Heavy-flavour and quarkonium production in the LHC era: from proton-proton to heavy-ion collisions
• Quarkonium Wave Functions at the Origin
• Color-octet quarkonia production II
• NLO Production and Decay of Quarkonium
• J/psi (psi') production at the Tevatron and LHC at O(α_s^4v^4) in nonrelativistic QCD
• World data of J/psi production consolidate NRQCD factorization at NLO
• First Monte Carlo global QCD analysis of pion parton distributions
• Pion Valence Quark Distribution from Matrix Element Calculated in Lattice QCD
• Universality of Generalized Parton Distributions in Light-Front Holographic QCD
• Pion Valence Structure from Ioffe Time Pseudo-Distributions
• New Observables in Inclusive Production of Quarkonia
• First direct lattice-QCD calculation of the $x$-dependence of the pion parton distribution function
• Hadro-production of Quarkonia in Fixed Target Experiments
• Valence parton distribution function of pion from fine lattice
• First measurement of transverse-spin-dependent azimuthal asymmetries in the Drell-Yan process
• Parton Distribution Functions of the Charged Pion Within The xFitter Framework
• Parton Distribution Functions from a Light Front Hamiltonian and QCD Evolution for Light Mesons
• Valence parton distribution of pion from lattice QCD: Approaching continuum
• A complete NLO calculation of the $J/\psi$ and ${\psi }^{\prime }$ production at hadron colliders
• Pion valence quark distribution from current-current correlation in lattice QCD
• The $x_F$ Dependence of $\psi$ and Drell-Yan Production
• Analysis of charmonium production at fixed-target experiments in the NRQCD approach
• Distinguishing Quarks and Gluons in Pion and Kaon PDFs
• A Measurement of the Psi' to J/psi Production Ratio in 920 GeV Proton-Nucleus Interactions
• Constraining gluon density of pions at large $x$ by pion-induced $J/\psi$ production
• Production of heavy quarks and heavy quarkonia
• A New Extraction of Pion Parton Distributions in the Statistical Model

Cited by in corpus (3)

• Fixed-target charmonium production and pion parton distributions
• Pion PDFs confronted by Fixed-Target Charmonium Production
• Probing Pion Valence Quark Distribution with Beam-charge Asymmetry of Pion-induced $J/\psi$ Production