Is there an Ay problem in low-energy neutron-proton scattering?
Franz Gross, Alfred Stadler
TL;DR
This paper calculates the analyzing power Ay in low-energy neutron-proton scattering using Covariant Spectator Theory, showing recent measurements align better with their results and resolving the longstanding Ay problem.
Contribution
It provides a new theoretical calculation of Ay that reconciles previous discrepancies and suggests no fundamental issue in low-energy np scattering data.
Findings
Recent TUNL measurements agree with the new calculations.
The study finds no Ay problem in low-energy neutron-proton scattering.
Reevaluation of low-energy data supports the consistency of theoretical models.
Abstract
We calculate Ay in neutron-proton scattering for the interactions models WJC-1 and WJC-2 in the Covariant Spectator Theory. We find that the recent 12 MeV measurements performed at TUNL are in better agreement with our results than with the Nijmegen Phase Shift Analysis of 1993, and after reviewing the low-energy data, conclude that there is no Ay problem in low-energy np scattering.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.