  Recent studies at Jefferson Lab show that there are a certain proportion of
nucleons in nuclei have momenta greater than the so-called nuclear Fermi
momentum $p_{F}$. Based on the transport model of nucleus-nucleus collisions at
intermediate energies, nucleon high momentum caused by the neutron-proton
short-range correlations in nuclei is constrained by comparing with $\pi$ and
photon experimental data and considering some uncertainties. The high momentum
cutoff value $p_{max}$ $\leq$ 2$p_{F}$ is obtained.
