Measurement of the beam asymmetry Σ in the forward direction for γ⃗ppπ0

N. Sparks et al. (CBELSA/TAPS Collaboration)
Phys. Rev. C 81, 065210 – Published 28 June 2010

Abstract

Photoproduction of neutral pions has been studied with the CBELSA/TAPS detector for photon energies between 0.92 and 1.68 GeV at the electron stretcher accelerator ELSA. The beam asymmetry Σ has been extracted for 115°<θc.m.<155° of the π0 meson and for θc.m.<60°. The new beam-asymmetry data cover the very forward region, which extend previously published data for the same reaction by our collaboration and improve the world database for photon energies above 1.5 GeV. The angular dependence of Σ shows overall good agreement with the SAID parametrization.

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  • Received 12 March 2010

DOI:https://doi.org/10.1103/PhysRevC.81.065210

©2010 American Physical Society

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Vol. 81, Iss. 6 — June 2010

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