(γ, π0γ) reaction on a nucleus in the GeV region

摘要

π0γ invariant mass distribution spectrum has been calculated for the (γ, π0γ) reaction on12C nucleus at 2.5 GeV beam energy. These π0 and γ are assumed to originate due to the decay of vector mesons produced in the photonuclear reaction. The nuclear medium effect on vector mesons and the effect of π0 rescattering on the π0γ invariant mass spectrum have been investigated