$^2$H($^3$He,t)2p reaction at 2 GeV

The exclusive $^2$H($^3$He, t)2p reaction has been studied at 2 GeV for energy transfer up to 500 MeV and triton angles up to 3.4 $circ$. The protons were measured in the large acceptance magnetic detector DIOGENE in coincidence with the forward tritons detected in a dedicated magnetic arm. The energy transfer spectra extend well above the pion threshold. However, in the region of $^{delta}$ excitation, the yield is less than 10% of the inclusive $*^2$H($^3$He,t) cross section, which indicates the small contribution of the $^{delta}$ N --> NN process. The angular distributions of the two protons in their center of mass have been analysed as a function of energy transfer and triton angle and a Legendre polynomial decomposition has been achieved. These data have been compared to a model based on a couple channel approach for describing the NN and N$^{delta}$ systems.