Probing the Isospin Dependence of Short-range Correlations in A=3 Nuclei

The nucleon-nucleon correlations at short ranges generate high-momentum nucleons in nuclei. Previous exclusive scattering experiments observed the neutron-proton pair (isospin singlet) dominance in high-momentum nucleons. This np dominance causes a scaling behavior inclusive cross sections at the xbj>1 quasielastic tail. At Jefferson Lab Hall A we checked this np dominance of SRC via the electron scattering on A=3 nuclei system. The 3H to 3He inclusive cross section at xbj>1 were measured at 0.4 < Q2 < 3 GeV^2 in two experiments ( E12-11-112 and E12-14-011). Absolute cross sections were extracted. The fraction of np pairs among high momentum nucleons in the A=3 system was determined from the 3H to 3He cross section ratio at xbj > 1.