Study of Photoproduction on the Reaction γp → ηp by Using Monte Carlo Simulation

Abstract

Monte Carlo simulation provides virtual experimental set up for the study of photo production reaction γp→ηp→γγp in Linux based system. Within the range of threshold energy (710 MeV) for eta meson, photo production events were generated. The generated event includes generation of eta meson, proton, two photons, beam and target vertex. datfiles were created in Linux which include the energy of gamma photon, length of target etc for the energy range 711 ≤ E iv

γ ≤ 1510 MeV. Then the dat files were run by using the mkin software which generates events. Thus the generated events were identified by using cbsim software. The detected events include identification of position of eta mesons, outgoing photons, proton, vertex identification, detection of position of elements in Crystal Ball (NaI) and TAPS (BaF 2 ) crystal and detection of energy and momentum. We found the invariant mass of eta meson and proton are 550 MeV and 938 MeV respectively according to Particle Data Group. Keywords: Monte Carlo simulation, eta meson, proton, photons, photo production