Measurement of the transverse target and beam-target asymmetries in η meson photoproduction at MAMI. - Akondi CS; Annand JR; Arends HJ; Beck R; Bernstein A; Borisov N; Braghieri A; Briscoe WJ; Cherepnya S; Collicott C; Costanza S; Downie EJ; et al. (Physical review letters, 2014)