6533b820fe1ef96bd12798eb

RESEARCH PRODUCT

A Monte-Carlo method to analyze the electromagnetic form factors of the nucleon

subject

description

Parity violating elastic electron-nucleon scattering allows to determine the vector stangeness content of the nucleon. The final uncertainty on the strange form factors is limited, among other parameters, by the uncertainty on the electromagnetic form factors. These are usually fitted with a functional form constrained by boundary conditions at Q 2= 0 and at large Q 2. These conditions induce huge correlations between parameters which are not taken into account to full extent by purely statistical methods. We describe here a Monte-Carlo method which accounts for correlations between parameters to all orders. We also propose a method for taking into account some systematical errors induced by the dispersion of the data.