Measurement of the G asymmetry for the γp↦Nπ channels in the Δ(1232) resonance region.

Authors :: Ahrens, J.
Altieri, S.
Annand, J. R. M.
Arends, H.-J.
Beck, R.
Braghieri, A.
d'Hose, N.
Dutz, H.
Goertz, S.
Grabmayr, P.
Hasegawa, S.
Heid, E.
Holvoet, H.
Van Hoorebeke, L.
Horikawa, N.
Iwata, T.
Jahn, O.
Jennewein, P.
Kondratiev, R.
Krimmer, J.
Source :: European Physical Journal A -- Hadrons & Nuclei; Oct2005, Vol. 26 Issue 1, p135-140, 6p, 1 Chart, 7 Graphs
Publication Year :: 2005
Abstract: The G asymmetry of the γ p↦ Nπ reaction has been measured for the first time for E <subscript>γ</subscript> = 340±14 MeV. This observable, for which very scarce published data exist, plays an important role to disentangle the contributions of the various nucleon resonances. The experiment, performed at the Mainz microtron MAMI, used a 4π-detector system, a linearly polarized, tagged photon beam, and a longitudinally polarized proton target. [ABSTRACT FROM AUTHOR]

Subjects :: MESON resonance
NUCLEAR magnetic resonance
NUCLEAR reactions
NUCLEON-nucleon interactions
PARTICLES (Nuclear physics)
POLARIZATION of photon beams
POLARIZATION (Nuclear physics)
NUCLEAR physics

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