Multiplicities of Forward - Backward Relativistic Charged Particles Produced in S-32-Emulsion Interactions at 200 AGeV/c

作者：Rasool Mir Hashim^*; Ahmad M Ayaz; Singh Om Veer; Ahmad Shafiq

来源：Chinese Journal of Physics, 2015, 53(5): 100302.

DOI：10.6122/CJP.20150629

Experimental data on relativistic shower particles emitted in the forward (theta(lab) < 90) and backward (theta(lab) >= 90) hemispheres in the interactions of a 200 AGeV/c S-32 beam with emulsion nuclei was obtained. The experimental multiplicity distributions (N-s(F), N-s(B)) of relativistic shower particles emitted in the forward (theta(lab) < 90) and backward (theta(lab) >= 90) hemispheres produced in the interactions of a S-32 projectile with CNO, AgBr, and Em are presented and analyzed. The experimental results have been compared with the data generated with the computer code FRITIOF based on the Lund Monte Carlo Model. The FRITIOF model is useful in classifying the particle emission into the forward hemisphere (FHS) and backward hemisphere (BHS). The correlations between the relativistic charged particles emitted in the forward and backward hemispheres have been investigated. The average multiplicities of particles emitted in the forward and backward hemispheres have been studied as a function of the projectile mass number. Also the asymmetry factor (m = N-s(B) - N-s(F)) m-distribution for different grey particle intervals i.e., N-g intervals is studied, and the ratio N-s(F)/N-s(B) as a function of N-g has been studied to show a Gaussian behaviour. Finally the scaling of the multiplicity distributions of the relativistic shower particles produced in both the forward and backward hemispheres is observed to obey the KNO scaling law.

• 出版日期2015-10