Measurement of the Helicity Asymmetry $E$ for the reaction $ \gamma p\to \pi^0 p$
2019.
The CBELSA/TAPS collaboration

Abstract (data abstract)
CBELSA/TAPS. Measurement of the Helicity Asymmetry E for the reaction $\gamma p \rightarrow \pi^{0} p$ Individual contributions to the systematic uncertainty are given. These include: - sys,beampol: beam polarization (3.3% uncertainty) - sys,targetpol: target polarization (2% uncertainty) - sys,analysis: obtained from a comparison of the results from different analyses

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