A polarized proton beam with a large longitudinal polarization component of 0.545 ± 0.005 (96% of the total polarization) was prepared in a storage ring (IUCF-Cooler). This was achieved by means of spin precession solenoids in two of the six straight sections of the ring. A polarized hydrogen storage cell target internal to the ring was used to measure the longitudinal spin correlation coefficient Azz in pp elastic scattering over the laboratory angular range 5.5°-43.5° (θc.m. = 11.5°-90°) with statistical errors of typically 0.025. The absolute normalization was determined to an accuracy of 2.0% by use of the identity Ayy-Axx-Azz≡1 at θc.m. = 90°. The identity also allows a reduction of the scale factor uncertainty of the previously published analyzing powers and spin correlation coefficients. The results are compared to recent pp partial wave analyses and NN potential models.
|Original language||English (US)|
|Number of pages||9|
|Journal||Physical Review C - Nuclear Physics|
|State||Published - May 2000|
ASJC Scopus subject areas
- Nuclear and High Energy Physics