Transverse Momentum Measurement of Secondary Particles in Proton-Emulsion Collisions at 800 GeV

Momentum distribution of secondary particles at large angular region in proton-emulsion interactions is measured by using emulsion stack technics. It is argued that the baryon stopping power in nucleus is larger than the early estimation. In this regard, energies/transverse momenta of secondary particles from proton collision with heavy nucleus are expected to be larger than proton-proton collisions. The purpose of this experiment is to measure the transverse momenta of secondary particles at large angular region from proton-emulsion (Ag/Br) interactions by scattering angle measurement in nuclear emulsion stack. Angular distribution as well as multiplicity distribution of p-Em interactions can also be obtained. We propose to expose emulsion stack to 800 GeV proton beam at Fermi laboratory.