Production of cumulative particles and light nuclear fragments at high $p_T$ values beyond the fragmentation region of nuclei in $pA$ collisions at a proton energy of 50 GeV

The first data on the production of cumulative $\pi^+$, $p$, and light nuclear fragments $d$ and $t$ emitted from a nucleus with a high transverse momentum at an angle of 35$^\circ$ in the laboratory system have been reported. The data have been obtained at the SPIN setup at the interaction of a 50-GeV proton beam extracted from the U-70 accelerator (IHEP, Protvino) with C, Al, Cu, and W nuclei.