Journal Article

PreJuSER-59067

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Experimental test of the new analytic matrix formalism for spin dynamics

Krisch, A. D. ; Leonova, M. A. ; Morozov, V. S. ; Raymond, R. S. ; Sivers, D. W. ; Wong, V. K. ; Gebel, R.FZJ* ; Lehrach, A.FZJ* ; Lorentz, B.FZJ* ; Maier, R.FZJ* ; Prasuhn, D.FZJ* ; Schnase, A. ; Stockhorst, H.FZJ* ; Hinterberger, F. ; Ulrich, K.

2007
Soc. [S.l.] @

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Please use a persistent id in citations: http://hdl.handle.net/2128/11163  doi:10.1103/PhysRevSTAB.10.041001

Abstract: We recently started testing Chao's proposed new matrix formalism for describing the spin dynamics due to a single spin resonance. The Chao formalism is probably the first fundamental improvement of the Froissart-Stora equation in that it allows analytic calculations of the beam polarization's behavior inside a resonance. We tested the Chao formalism using a 1: 85 GeV/c polarized deuteron beam stored in COSY, by sweeping an rf dipole's frequency through 200 Hz, while varying the distance from the sweep's end frequency to an rf-induced spin resonance's central frequency. Since the Froissart- Stora equation itself can make no prediction inside a resonance, we compared our experimental data with the predictions of the Chao formalism and those of an empirical two-fluid model based on the Froissart- Stora equation. The data strongly favor the Chao formalism.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Kernphysikalische Großgeräte (IKP-4)

Research Program(s):

1. Physik der Hadronen und Kerne (P53)

Appears in the scientific report 2007

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