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Differential cross sections for Compton scattering from the proton have beenmeasured at scattering angles of $55^\circ$, $90^\circ$, and $125^\circ$ in thelaboratory frame using quasimonoenergetic linearly (circularly) polarizedphoton beams with a weighted mean energy value of 83.4\,MeV (81.3\,MeV). Thesemeasurements were performed at the High Intensity Gamma-Ray Source facility atthe Triangle Universities Nuclear Laboratory. The results are compared toprevious measurements and are interpreted in the chiral effective field theoryframework to extract the electromagnetic dipole polarizabilities of the proton,which gives $\alpha_{E1}^p = 13.8\pm1.2_{\rm stat}\pm0.1_{\rm BSR}\pm0.3_{\rmtheo}, \beta_{M1}^p = 0.2\mp1.2_{\rm stat}\pm0.1_{\rm BSR}\mp0.3_{\rm theo}$ inunits of 10$^{-4}$\, fm$^3$.

Proton Compton Scattering from Linearly Polarized Gamma Rays