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- Publisher
- American Physical Society (APS)
- Copyright
- Copyright © 2003 The American Physical Society
- ISSN
- 1089-490X
- DOI
- 10.1103/PhysRevC.67.027001
- Publisher site
- See Article on Publisher Site
Abstract
We have extended an earlier phase-shift analysis of p - 3 He scattering data by including additional low-energy measurements in the dataset. The p - 3 He zero-energy scattering lengths obtained from this analysis depend sensitively on a group of cross section and analyzing power measurements at proton energies below 1 MeV. When this group of measurements is included in the dataset, two possible phase-shift solutions are found. The first solution yields a singlet scattering length of a s = 15.1 fm and a triplet scattering length of a t = 7.9 fm , while the second solution yields values of a s = 7.2 fm and a t = 10.4 fm . Without this group of measurements, the best-fit scattering lengths are a s = 10.3 fm and a t = 8.2 fm . We believe that the scattering lengths are currently not well determined experimentally and that additional low-energy p - 3 He data are needed in order to clarify the situation.
Journal
Physical Review C – American Physical Society (APS)
Published: Feb 1, 2003