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

Abstract

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.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [3]
  1. Department of Physics and Cyclotron Facility, Indiana University, Bloomington, Indiana 47405 (United States)
  2. University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)
  3. University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States) (and others)
Publication Date:
OSTI Identifier:
20216928
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 61; Journal Issue: 6; Other Information: PBD: Jun 2000; Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; PROTON-PROTON INTERACTIONS; DEUTERONS; PIONS PLUS; POLARIZATION; SPIN; D WAVES; S WAVES; EXPERIMENTAL DATA

Citation Formats

Przewoski, B. v., Balewski, J. T., Doskow, J., Meyer, H. O., Pollock, R. E., Rinckel, T., Thoerngren-Engblom, P., Wellinghausen, A., Haeberli, W., and Lorentz, B. Measurement of spin correlation coefficients in p(vector sign)p(vector sign){yields}d{pi}{sup +}. United States: N. p., 2000. Web. doi:10.1103/PhysRevC.61.064604.
Przewoski, B. v., Balewski, J. T., Doskow, J., Meyer, H. O., Pollock, R. E., Rinckel, T., Thoerngren-Engblom, P., Wellinghausen, A., Haeberli, W., & Lorentz, B. Measurement of spin correlation coefficients in p(vector sign)p(vector sign){yields}d{pi}{sup +}. United States. doi:10.1103/PhysRevC.61.064604.
Przewoski, B. v., Balewski, J. T., Doskow, J., Meyer, H. O., Pollock, R. E., Rinckel, T., Thoerngren-Engblom, P., Wellinghausen, A., Haeberli, W., and Lorentz, B. Thu . "Measurement of spin correlation coefficients in p(vector sign)p(vector sign){yields}d{pi}{sup +}". United States. doi:10.1103/PhysRevC.61.064604.
@article{osti_20216928,
title = {Measurement of spin correlation coefficients in p(vector sign)p(vector sign){yields}d{pi}{sup +}},
author = {Przewoski, B. v. and Balewski, J. T. and Doskow, J. and Meyer, H. O. and Pollock, R. E. and Rinckel, T. and Thoerngren-Engblom, P. and Wellinghausen, A. and Haeberli, W. and Lorentz, B.},
abstractNote = {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.},
doi = {10.1103/PhysRevC.61.064604},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 6,
volume = 61,
place = {United States},
year = {2000},
month = {6}
}