Is there an Ay problem in low-energy neutron-proton scattering?

Details Is there an Ay problem in low-energy neutron-proton scattering? Is there an Ay problem in low-energy neutron-proton scattering?

2008-08-21

arxiv.org/abs/0808.2962v1

Phys.Lett.B668:163-166,2008

Physics

Nuclear Physics

Nuclear Theory

5 pages, 2 figures, accepted by PLB

Scientific paper

10.1016/j.physletb.2008.08.037

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.

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