Spin polarizabilities of the proton by measurement of Compton double-polarization observables

D. Paudyal, P. P. Martel, G. M. Huber +90

The Compton double-polarization observable ${\Sigma }_{2z}$ has been measured for the first time in the $\Delta (1232)$ resonance region using a circularly polarized photon beam incident on a lo…