Polarization degrees of freedom in near-threshold photoproduction of omega mesons in the pi^0 gamma decay channel

Abstract

We study polarization variables in the photoproduction of omega-mesons with subsequent omega to gamma pi^0 decay. Single and double polarization observables are calculated as a function of different final-state angles. Reaction models include pomeron (natural parity) and pi^0 (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.

10 pages, 10 figures, explicit reference to sign of decay asymmetry added

References in corpus (3)

• Partial decay widths of baryons in the spin-momentum operator expansion method
• Partial decay widths of baryons in the spin-momentum operator expansion method
• Selected vector-meson decay-distributions in reactions of polarized photons with protons

Cited by in corpus (2)

• $N^{\ast }\to N{\eta }^{\prime }$ decays from photoproduction of ${\eta }^{\prime }$-mesons off protons
• Photon beam asymmetry $\Sigma$ in the reaction $\vec{\gamma }p\to p\omega$ for $E_{\gamma }$ = 1.152 to 1.876 GeV