${\pi }^0$ photoproduction on the proton for photon energies from 0.675 to 2.875 GeV

Abstract

Differential cross sections for the reaction $\gamma p\to p{\pi }^0$ have been measured with the CEBAF Large Acceptance Spectrometer (CLAS) and a tagged photon beam with energies from 0.675 to 2.875 GeV. The results reported here possess greater accuracy in the absolute normalization than previous measurements. They disagree with recent CB-ELSA measurements for the process at forward scattering angles. Agreement with the SAID and MAID fits is found below 1 GeV. The present set of cross sections has been incorporated into the SAID database, and exploratory fits have been extended to 3 GeV. Resonance couplings have been extracted and compared to previous determinations.

18 pages, 48 figures

References in corpus (2)

• Extended Partial-Wave Analysis of piN Scattering Data
• Photoproduction of pi0-mesons off protons from the Delta(1232) region to E(gamma) = 3 GeV

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