Measurement of spin correlation coefficients in p(vector sign)p(vector sign){yields}d{pi}{sup +}

Journal Article · Thu Jun 01 04:00:00 EDT 2000 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.61.064604· OSTI ID:20216928

Przewoski, B v ^[1]; Balewski, J T ^[1]; Doskow, J ^[1]; Meyer, H O ^[1]; Pollock, R E ^[1]; Rinckel, T ^[1]; Thoerngren-Engblom, P ^[1]; Wellinghausen, A ^[1]; Haeberli, W ^[2]; Lorentz, B ^[2]

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1. Department of Physics and Cyclotron Facility, Indiana University, Bloomington, Indiana 47405 (United States)
2. University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)

The spin correlation coefficent combinations A{sub xx}+A{sub yy} and A{sub xx}-A{sub yy}, the spin correlation coefficients A{sub xz} and A{sub zz}, and the analyzing power were measured for p(vector sign)p(vector sign){yields}d{pi}{sup +} between center-of-mass angles 25 degree sign {<=}{theta}{<=}65 degree sign at beam energies of 350.5, 375.0, and 400.0 MeV. The experiment was carried out with a polarized internal target and a stored, polarized beam. Nonvertical beam polarization needed for the measurement of A{sub zz} was obtained by the use of solenoidal spin rotators. Near threshold, only a few partial waves contribute, and pion s and p waves dominate with a possible small admixture of d waves. Certain combinations of the observables reported here are a direct measure of these d waves. The d-wave contributions are found to be negligible even at 400.0 MeV. (c) 2000 The American Physical Society.

• OSTI ID: 20216928
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 61; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
D WAVES
DEUTERONS
EXPERIMENTAL DATA
PIONS PLUS
POLARIZATION
PROTON-PROTON INTERACTIONS
S WAVES
SPIN