Initial singlet and triplet spin state contributions to pp -> pp pi0
Abstract
The PINTEX facility at the IUCF Cooler ring, dedicated to the study of spin dependence in nucleon-nucleon interactions, has been used to measure polarization observables of the reaction pp -> pp pi0 at beam energies between 325 and 400 MeV. The stored polarized proton beam had spin projections both in the longitudinal and the transverse directions with respect to the beam momentum. We report here on the measurements of the relative transverse and longitudinal spin-dependent cross sections, deltasigma_T/sigma_tot and deltasigma_L/sigma_tot, and how from these observables the initial spin singlet and triplet cross sections are obtained. Considering angular momentum states less or equal to one, the contribution of the Ps partial waves to the cross section can be extracted.
Cite
@article{arxiv.nucl-ex/9908024,
title = {Initial singlet and triplet spin state contributions to pp -> pp pi0},
author = {P. Thorngren Engblom and H. O. Meyer and J. T. Balewski and W. W. Daehnick and J. Doskow and W. Haeberli and B. Lorentz and P. V. Pancella and R. E. Pollock and B. von Przewoski F. Rathmann and T. Rinckel and Swapan K. Saha and B. Schwartz and A. Wellinghausen and T. Wise.},
journal= {arXiv preprint arXiv:nucl-ex/9908024},
year = {2009}
}
Comments
Contribution to PANIC99, XVth Particles and Nuclei International Conference, June 10-16, 1999, Uppsala, Sweden. Latex, 5 pages, 3 figures