A. Mozumder

Characteristics of p-N Interactions at 400 GeV/c in Emulsion

The angular and rapidity distributions of secondary charged particles from p-N interactions at 400 GeV/c for charged particle multiplicity ≥ 4 are presented. The forward-backward ratio in the centre of mass system is found to be 1.54 ± 0.07. The rapidity distribution shows a plateau in the central region with a mean value 3.81 ± 0.03. The study of rapidity dispersion indicates that in ~ 30% of the events single nova is produced.

Estimation of energy of the primary particle in hadron-nucleus interactions in

Abstract The recent methods of estimating the energy of the primary particle in hadron-nucleus interactions have been compared and tested by employing the experimental data on angular distributions from p-emulsion interactions at the highest available accelerator energy of 400 GeV. The method due to Bhowmik et al. has been found to give the best energy estimates for individual events. This method also yields plausible estimates of inelasticity and number of collisions inside the nucleus.

Multiperipheral Cluster Production at High Energies

The two-channel Chew-Pignotti mu\tiperipheral cluster model due to Snider has been tested on 67 GeV/c p-N data. The data strongly favour short-short correlations in the rapidity gaps. The cluster size and the cluster density in rapidity space are estimated to be 5.Z and 0.5 respectively. Comparison of the present results with those at higher energies indicates that the cluster size remains practically constant at a value 5~6 particles within the energy range 67~400GeV.

Energy estimation of photons in nuclear emulsions

Abstract A comparison is made of the three methods by Stearns, Borsellino and Olsen used for estimating the photon energy from the opening angle of the e + e − pair. It is found that Olsens method gives the most reliable estimate of photon energy.