ISSN:
1434-601X
Keywords:
PACS. 13.75.Gx Pion-baryon interactions – 13.85.Dz Elastic scattering – 13.88.+e Polarization in interactions and scattering – 14.20.Gk Baryon resonances with S = 0
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract. The spin rotation parameters A and R were measured for the elastic pion-proton scattering by the PNPI-ITEP collaboration in the D13(1700) resonance region. The main goal of the experimental program is to resolve the current partial-wave analyses (PWA) uncertainties. Simultaneously with A and R the polarization parameter P was measured with the purpose to improve the experimental database and estimate systematic errors. The constraint which demands a smooth energy dependence of all π- p transverse amplitude zeros in the complex plane together with the new experimental data on A parameter can lead to the conclusion that the Barrelet branch of “zero trajectories" is chosen improperly in PWA of the Carnegie-Mellon-Lawrence-Berkely-Laboratory groups at the range of the pion beam momentum near 1.0 GeV/c. The setup included a longitudinally polarized proton target with superconductive magnet, multiwire spark chambers and carbon polarimeter with thick filter. The experiment was performed at the ITEP proton synchrotron, Moscow.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100500170044
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