Title of article :
Photoproduction of π^0-Mesons from the Nucleon and Deuteron
Author/Authors :
Darwish, Eed Mohamed Taibah University - Faculty of Science - Physics Department, Saudi Arabia , Darwish, Eed Mohamed Sohag University - Faculty of Science - Physics Department, Egypt , Hemmdan, Amel Aswan University - Faculty of Science - Physics Department, Egypt , El-Shamy, Nesreen T. Taibah University - Faculty of Science - Physics Department, Saudi Arabia , El-Shamy, Nesreen T. Ain Shams University - Faculty of Girls - Physics Department, Egypt
Abstract :
The photoproduction of π^0-mesons from the nucleon and deuteron has been studied for incidents of photon energies up to 1.5 GeV. By using the MAID-2007 model for the process on the nucleon, we predict results for the unpolarized and helicity-dependent total cross sections of the semi-exclusive reaction γd→π^0X (X=np+d) with the inclusion of rescattering effects. We find that rescattering effects yield a substantially large contribution. The extracted results are compared with the available experimental data and a satisfactory agreement is obtained. In addition, the contribution of γd→π^0X (X=np+d) to the finite GDH integral has been evaluated by explicit integration up to 1.5 GeV and a total value of 256.96 μb has been obtained. Convergence of the GDH integral has been reached.
Keywords :
few , body systems , meson production , photoproduction reactions , spin observables
Journal title :
Makara Journal Of Science
Journal title :
Makara Journal Of Science
