Simulation of optical model covariance parameters with reduced uncertainty using representativity factor approach

Neutron cross-section and their covariance at higher energies are generated by nuclear model parameters. The model based covariance exhibit a large systematic errors as compared to experimentally generated covariance. In the absence of probability distribution for the systematic errors, we propose the representativity factor approach to minimize these errors by simulating the upper and lower bounds by the Technique of Determinant Inequalities developed by us. We demonstrate the utility of our approach in simulating optical model covariance parameters for fluorine with reduced systematic errors.

► Optical model parameters. ► Reduction of systematic errors in the model. ► Representativity factor Approach. ► Upper and lower limits to systematic errors in the absence of distribution for the systematic errors. ► Technique of Determinant Inequalities to estimate the Upper and Lower bounds.