Comment on "Four-body charge transfer processes in proton--helium collisions"

TL;DR

This paper uses the plane-wave first Born approximation to analyze proton-helium charge transfer, finding good agreement with experimental data at specific energies and angles, challenging previous results.

Contribution

It demonstrates that PWFBA can accurately predict transfer excitation FDCS in proton-helium collisions at 300 keV, contradicting earlier findings.

Findings

FDCS agrees with experimental data at 300 keV and small angles

PWFBA provides accurate shape and magnitude predictions

Contradicts previous theoretical results

Abstract

We found, within the plane-wave first Born approximation (PWFBA), that the proton-helium fully differential cross section (FDCS) for transfer excitation agrees well with the experimental one at the proton energy Ep = 300 keV and small scattering angles both in shape and in magnitude. This result is in a contradiction with that obtained in [1].