A QCD analysis of near-threshold quarkonium leptoproduction at large photon virtualities

Abstract

We propose a novel approach to compute the cross section of near-threshold $J/\psi$ and ${\rm Y}$ production in electron-proton scattering at large photon virtualities $Q^2$ based on an operator product expansion. We show that the process can be used to extract the gluon part of the D-term gravitational form factor of the proton. At the subleading level, it is also sensitive to the trace anomaly effect of QCD.

14 pages

References in corpus (7)

• The nucleon spin and momentum decomposition using lattice QCD simulations
• Unbiased determination of DVCS Compton Form Factors
• Accessing the real part of the forward $J/\psi$-p scattering amplitude from $J/\psi$ photo-production on protons around threshold
• Deep Inelastic Pion Electroproduction at Threshold
• Sub-threshold $J/\psi$ and ${\rm Y}$ Production in $\gamma A$ Collisions
• Threshold Pion Electroproduction at Large Momentum Transfers
• Search for Sub-threshold Photoproduction of J/Psi Mesons

Cited by in corpus (15)

• 50 Years of Quantum Chromodynamics
• Gluon gravitational structure of hadrons of different spin
• Precision Studies of QCD in the Low Energy Domain of the EIC
• Nucleon D-term in holographic QCD
• Perturbative Calculations of Gravitational Form Factors at Large Momentum Transfer
• Near Threshold Heavy Quarkonium Photoproduction at Large Momentum Transfer
• Parton distribution function for the gluon condensate
• Trace anomaly form factors from lattice QCD
• Electroproduction of heavy vector mesons using holographic QCD: from near threshold to high energy regimes
• Photo- and electro-production of narrow exotic states: from light quarks to charm and up to bottom
• Exclusive J/$\psi$ Detection and Physics with ECCE
• Photo-production of ${\eta }_{c,b}$ near Threshold
• Exclusive Charmonium Production at the Electron-ion collider in China
• Energy-momentum tensor in QCD: nucleon mass decomposition and mechanical equilibrium
• Analysis of $J/\psi$ and $\psi (2S)$ Charmonium Production in Ultraperipheral Lead-Lead and Proton-Lead Collisions at LHC Energies