https://doi.org/10.1140/epja/i2008-10696-0
Regular Article - Theoretical Physics
Polarization degrees of freedom in near-threshold photoproduction of 
-mesons in the 
decay channel
1
Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Bonn, Germany
2
Petersburg Nuclear Physics Institute, Gatchina, Russia
3
Physikalisches Institut, Universität Bonn, Bonn, Germany
Received:
10
September
2008
Revised:
14
November
2008
Published online:
24
December
2008
We study polarization variables in the photoproduction of -mesons with subsequent →
decay. Single and double polarization observables are calculated as a function of different final-state angles. Reaction models include pomeron (natural parity) and (unnatural parity) exchange in the t -channel. In addition, the contribution of s -channel resonances is considered. The sensitivity of the polarization observables to the reaction dynamics is discussed.
PACS: 11.80.Et Partial-wave analysis – / 13.30.-a Decays of baryons – / 13.60.Le Meson production –
© SIF, Springer-Verlag Berlin Heidelberg, 2009
