Polarization phenomena in few-body systems Page: 3 of 11
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Fig. 5 -'tas'stwice 'o u t for the larger s-lues o( momentum transfer Fig. 4 shows re-Ais of analyzing-power mea-
surements in p-p and n -p elastic scattering at 2 and 6 GeVic. Clearly the effects arc substantial and
rhey display a marked energy dependence. Finally. Fig. S shows analyzing-powers in the inelastic
p - p - .* + n three-body final state reaction. Again the spin effects are large. There were no re-
ported calculations of any of these observables. so the situation is reminiscent of that which existed
with respect to elastic nucleon-deuteron scattering below 50 %IcV several year ago. Some polarization
measurements had been made. but the early exact three-body calculations were limited to s-wave N-N
interactions, so they did not provide the observed polarizations. We can hope that the high energy
theorists will provide calculations to reduce the present experimental-theoretical mismatch in ,s expedi-
tious a manner as was accomplished by the lower energy thrcc-body calculations.
3. THREE-NUCLEON SNSrEM
Since the three-nucleon polarization data and the relevant calculations were summarized at the Quebec
conference, the work described here will serve as a natural extension of that report I111. Wee Fig. I
of reference I1 for definitions of the spin-I analyzing powers and of the polarization-transfer coef-
ficients).
There is little new elastic N -d polarization data to discuss. Sreinbock et al. 1121 reported on their
neutron analyzing power measurements in n - d scattering near 16 and 22 MeV, and their work con-
firned that of Morris et al. 1131 in finding good agreement with the p-d polarization data near those
energies. There now remains only a single 35 MeV point at cnn = 120' for which the nucleon analyz-
ing-powers in n - d and p -d scattering are reported to differ significantly 1141. All the other nucleon-3-
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Conzett, H.E. Polarization phenomena in few-body systems, article, December 1, 1975; Berkeley, California. (https://digital.library.unt.edu/ark:/67531/metadc869305/m1/3/: accessed April 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.