Abstract
We have succeeded in measuring at 0° and small angles the energy spectra for the (d,2p]) reaction (with the two protons in the singlet S state) at 650 MeV and 2 GeV. It is demonstrated that the reaction is a one-step process that can be used to study isospin-spin excitations. The Δ excitation is very clearly observed. A shift down in energy of the Δ peak from the proton to the target is observed. The experiments are performed with a tensor polarized beam and the tensor analyzing power for the p(,He)n reaction at 2 GeV is given.
- Received 1 July 1987
DOI:https://doi.org/10.1103/PhysRevLett.59.974
©1987 American Physical Society