Kavli Affiliate: Feng Yuan
| First 5 Authors: Yuxun Guo, Feng Yuan, Wenbin Zhao, ,
| Summary:
With Bayesian inference, we investigate the impact of recent near-threshold
$J/psi$ production measurements by the $J/psi$ 007 experiment and GlueX
collaboration on the extraction of proton’s gravitational form factors. We
apply the generalized parton distribution framework at the next-to-leading
order and demonstrate a stable expansion for the near-threshold kinematics. We
find that the experimental constraints are in good agreement with the
state-of-the-art lattice simulations, where negative $C_q(t)$ and $C_g(t)$ are
strongly preferred. This highlights a great potential to extract them from
future high-precision experiments.
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