Extraction of proton trace anomaly energy from near-threshold $$\phi $$ and $$J/\psi $$ photo-productions

The trace anomalous energy contribution to the proton mass is a very important topic in non-perturbative QCD and hadron physics. In experiments, it under hot discussions on how measure energy.The interpretation of anomaly still not clear.To connect theory with experiment,we extract by analyzing near-threshold photo-production data $\phi$ J/$\psi$ vector mesons. Based vector-meson-dominance model Van der Waals representation, we find that percentage ranges from $16\%$ $24\%$, which similar order magnitude as 23$\%$ given Lattice QCD. We also provide approximate magnitudes systematic uncertainties extracted results assumptions well fitting procedures. give relative statistical 17.2$\%$, 17.7$\%$, 3.6$\%$, 8.2$\%$, total 21.4$\%$, 54.2$\%$, 37.2$\%$, 25.7$\%$, for analyses GlueX, LEPS, CLAS, SAPHIR data, respectively. argue $\Upsilon$ experiments are more beneficial measurement future.