Polarized deuteron charge-exchange reaction $dp->{pp}_sN\pi$ in the Delta-isobar region
Abstract
Mechanisms of the charge exchange reaction $dp\to \{pp\}_{\!s} N\pi$, where $\{pp\}_{\!s}$ is a two-proton system at low excitation energy, are studied at beam energies 1 -- 2 GeV and for invariant masses $M_X$ of the final $N\pi $ system that correspond to the formation of the $\Delta(1232)$ isobar. The direct mechanism, where the initial proton is excited into the $\Delta(1232)$, dominates and explains the existing data on the unpolarized differential cross section and spherical tensor analyzing power $T_{22}$ for $M_X> 1.2$ GeV/$c^2$. However, this model fails to describe $T_{20}.
- Publication:
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arXiv e-prints
- Pub Date:
- February 2015
- DOI:
- 10.48550/arXiv.1502.04675
- arXiv:
- arXiv:1502.04675
- Bibcode:
- 2015arXiv150204675U
- Keywords:
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- Nuclear Theory
- E-Print:
- 6 pages, 3 figures