Effective Isovector {ital NN} Interaction Strengths Determined from the {sup 28}Si({rvec p},{rvec p}{sup {prime}}){sup 28}Si(6{sup {minus}},{ital T}=1) Reaction
Journal Article
·
· Physical Review Letters
- Indiana University Cyclotron Facility, Bloomington, Indiana 47408 (United States)
- Centenary College of Louisiana, Shreveport, Louisiana 71134 (United States)
We report measurements of {sigma}({theta}), A({theta}), and polarization transfer for the {sup 28}Si({rvec p},{rvec p}{sup {prime}}){sup 28}Si reaction to the 6{sup {minus}},T=1 state at 14.36MeV initiated with 198MeV polarized protons. Normalization of the transition strength in the distorted-wave impulse approximation (DWIA) to inelastic electron scattering overpredicts the spin-longitudinal cross section by more than a factor of 2, while the spin-transverse cross section is nearly correct and the spin-orbit cross section is underpredicted. A reduced in-medium {rho}-meson mass reproduces some of these features, while strong relativistic mean field or Pauli blocking effects are too small. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 467442
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 9 Vol. 78; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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