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/sup 12,13/C(/rvec p/,. pi. /sup +-/) reactions and quasifree /rvec N/N. -->. NN. pi. expectations

Technical Report ·
DOI:https://doi.org/10.2172/6341832· OSTI ID:6341832
The analyzing power behavior and the isospin-dependence of the cross sections for near-threshold /sup 13/C(/rvec p/,..pi../sup +-/) and /sup 12/C(/rvec p/,..pi../sup +/) reactions are compared with expectations from pion production measurements in free two-nucleon collisions. The general agreement for (/rvec p/,..pi../sup +/) suggests that the stable analyzing power pattern observed for (/rvec p/,..pi../sup /minus//) continuum transitions may reflect the as yet unmeasured free /rvec p/n ..-->.. pp..pi../sup /minus// behavior. We also discuss constraints imposed by quasifree /rvec N/N ..-->.. NN..pi.. expectations on the interpretation of anomalous (/rvec p/,..pi../sup +/) results for two strongly populated states at high excitation in /sup 13,14/C. 21 refs., 3 figs.
Research Organization:
Argonne National Lab., IL (USA)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
6341832
Report Number(s):
ANL/PPRNT-89-149; ON: DE89008337
Country of Publication:
United States
Language:
English