A Phenomenological Expression for Deuteron Electromagnetic Form Factors Based on Perturbative QCD Predict ions^*

For deuteron's electromagnetic form factors, perturbative QCD (pQCD) predicts that $G^+_{00}$ becomes the dominate helicity amplitude and $G^+_{+0}$ and $G^+_{+-}$ are suppressed by factors $\Lambda_\textrm{{QCD}}/Q$ and $\Lambda^2_\textrm{{QCD}}/Q^2$ at large $Q^2$ respectively. We try to discuss the higher-order corrections beyond the pQCD asymptotic predictions by interpolating an analytical form to the intermediate energy region. From fitting the data, our results show that the helicity-zero to zero matrix element $G^+_{00}$ dominates the gross structure function $A(Q^2)$ in both the large and intermediate energy regions. It is a good approximation for $G^+_{+-}$ to ignore the higher-order contributions and the higher-order corrections to $G^+_{+0}$ should be taken into account due to sizeable contributions in the intermediate energy region.