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We propose a novel approach to compute the cross section of near-threshold $J/\psi$ and $\Upsilon$ production in electron-proton scattering at large photon virtualities $Q^2$ based on an operator product expansion.… Click to show full abstract
We propose a novel approach to compute the cross section of near-threshold $J/\psi$ and $\Upsilon$ 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.
Keywords:
analysis near;
qcd analysis;
near threshold;
photon virtualities;
large photon
Journal Title: Physical Review D
Year Published: 2020
Link to full text (if available)
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Journal Title: Physical Review D
Year Published: 2020
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!