Measurement of the Beam Asymmetryin the Forward Direction for ~ ! pπ 0
2012
Photoproduction of neutral pions has been studied with the CBELSA/TAPS detector for
photon energiesbetween 0.92 and 1.68 GeV at the electron accelerator ELSA. The beam asymmetry � has been extracted for 115 ◦ < �c.m. < 155 ◦ of the � 0
mesonand forc.m. < 60 ◦ . The new beam asymmetry data improve the world database for
photon energiesabove 1.5 GeV and, by covering the very forward region, extend previously published data for the same reaction by our collaboration. The angular dependence ofshows overall good agreement with the SAID parameterization. PACS numbers: 13.60.Le
Mesonproduction, 13.60.-r Photon and charged-lepton interactions with hadrons, 13.75.Gx Pion-baryon interactions, 13.88.+e Polarization in interactions and scattering, 14.40.Aq �, K, and �
mesons, 25.20.Lj Photoproduction reactions
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