Main characteristics of the 3He + p →p + p + p + n reaction at the 3He nucleus momentum of 2.5 GeV/c

The ITEP liquid-hydrogen 80-cm bubble chamber has been exposed to a separated beam of 3He nuclei having a momentum of 2.5 GeV/c. 6425 events of the 3He+p→p+p+p+n reaction have been selected by means of a kinematical analysis. Angular distributions, effective mass and momentum distributions of secondary particles have been investigated for the reaction. The experimental data have been compared with predictions of the pole-graph model taking into account the final-state interaction of the spectators. The model free of parameters is able to describe the main characteristics of the 3He+p→p+p+p+n reaction in a satisfactory manner