Pion and proton production in forward and backward hemisphere in C-emulsion interaction at 4.5 GeV/c per nucleon

The paper presents an in-depth study on the forward and backward multiplicity correlations in case of pions and protons (from the target) based on the experimental data on ¹²C-emulsion interaction at 4.5 GeV/c per nucleon. The cumulative distribution of their emission angles in the backward hemisphere is presented. The asymmetry parameter (A) and the forward-backward ratio (F/B) as a function of the number of heavy particles (n_h) is also shown. The results reveal many interesting characteristics regarding the backward particle production.