The Beam-Target Helicity Asymmetry for $\vec{\gamma }\vec{n}\to {\pi }^{-}p$ in the {\bf{$N^{\ast }$} Resonance Region

D. Ho, P. Peng, C. Bass +140

We report the first beam-target double-polarization asymmetries in the $\gamma +n(p)\to {\pi }^{-}+p(p)$ reaction spanning the nucleon resonance region from invariant mass $W$= $150…