Proton-proton analyzing power and spin correlation measurements between 250 and 450 MeV at 7{degree}{le}{theta}{sub c.m.}{le}90{degree} with an internal target in a storage ring

Journal Article · Thu Oct 01 04:00:00 EDT 1998 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.58.1897· OSTI ID:659340

Przewoski, B v; Dezarn, W A; Doskow, J; Dzemidzic, M; Hardie, J G; Meyer, H O; Pollock, R E; Rinckel, T; Sperisen, F ^[1]; Przewoski, B v; Rathmann, F; Haeberli, W; Lorentz, B; Wise, T ^[2]; Pancella, P V ^[3]

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1. Department of Physics, Indiana University, Bloomington, Indiana 47405 (United States)
2. University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)
3. Western Michigan University, Kalamazoo, Michigan 49008 (United States)

We have measured the pp spin correlation coefficients A{sub xx}, A{sub yy}, A{sub xz} and the analyzing power A{sub y} at 250.0, 280.0, 294.4, 310.0, 350.0, 399.1, and 448.9 MeV over the laboratory angular range 3.5{degree}{endash}43.5{degree} ({theta}{sub c.m.}=7{degree}{endash}90{degree}). The statistical accuracy is approximately {plus_minus}0.006 for A{sub y} and {plus_minus}0.02 for A{sub mn} per 1{degree} angle bin, while the corresponding scale factor uncertainties are 1.3 and 2.5thinsp{percent}, respectively. The experiment makes use of a polarized hydrogen gas target internal to a proton storage ring (IUCF Cooler) and a circulating beam of polarized protons. The method of calibration relative to {ital pp} spin correlation coefficients and analyzing power at 197.4 MeV, the injection energy, involves up and down ramping of the energy of the polarized beam. The data are compared to recent pp partial waves analyses and NN potential models, emphasizing in particular the energy dependence in the region of the pion production threshold. thinsp {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 659340
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 4 Vol. 58; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CALIBRATION
HYDROGEN
POLARIZED BEAMS
PROTON-PROTON INTERACTIONS
SPIN ORIENTATION
STORAGE RINGS