Phase shift analysis of all proton-proton scattering data belowTlab=350 MeV

Abstract

As a continuation of our 0–30 MeV analysis we present a multienergy phase shift analysis of all pp scattering data below ${\mathit{T}}_{\mathrm{lab}}$=350 MeV. In the description of all partial waves we take exactly into account the long-range potential consisting of the improved Coulomb potential (including the magnetic moment interaction), the vacuum polarization potential, and the tail of the one-pion-exchange potential. To describe the short-range interaction in the lower partial waves we use a P-matrix parametrization. The intermediate partial waves are treated either by optimal mapping techniques or by using the Nijmegen soft-core potential. The latter gives a better description of the data. The final data set comprises 1626 scattering observables. The best fit to this final data set results in ${\mathrm{\chi }}^2$/${\mathit{N}}_{\mathrm{df}}$=1.117, where ${\mathit{N}}_{\mathrm{df}}$=1576 is the number of degrees of freedom. The pp${\mathrm{\pi }}^0$ pseudovector coupling constant is determined to be ${\mathit{f}}_0^2$=(74.9±0.7)×${10}^{\mathrm{-}3}$. Single-energy phase shifts and errors are also given.