Nucleon charge exchange on the deuteron: A critical review

TL;DR

This paper reviews experimental data on nucleon charge exchange on the deuteron, proposing a method to determine the np scattering amplitude in the backward direction with minimal ambiguities.

Contribution

It introduces a novel approach to extract the np scattering amplitude from charge exchange data using the Dean sum rule, enhancing understanding of nucleon interactions.

Findings

Experimental data analyzed via Dean sum rule

Proposed ratio measurement for np scattering amplitude

Potential for reduced ambiguities in backward scattering analysis

Abstract

The existing experimental data on the d(n,p)nn and d(p,n)pp cross sections in the forward direction are reviewed in terms of the Dean sum rule. It is shown that the measurement of the ratio of the charge exchange on the deuteron to that on the proton might, if taken together with other experimental data, allow a direct construction of the np -> np scattering amplitude in the backward direction with few ambiguities.