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In the frame work of relativistic mean field (RMF) theory, we calculate thedensity distribution of protons and neutrons for $^{40,42, 44,48}Ca$ with NL3and G2 parameter sets. The microscopic proton-nucleus optical potential for$p+^{40,42,44,48}Ca$ system is evaluated from Dirac NN-scattering amplitude andthe density of the target nucleus using Relativistic-Love-Franey andMcNeil-Ray-Wallace parametrizations. Then we estimate the scatteringobservables, such as elastic differential scattering cross-section, analyzingpower and the spin observables with relativistic impulse approximation. Wecompare the results with the experimental data for some selective cases andfound that the use of density as well as the scattering matrix parametrizationis crucial for the theoretical prediction.

Application of relativistic mean field and effective field theory density to calculate scattering observables for Ca isotopes