English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The beam-helicity asymmetry in associated electroproduction of real photons,$ep\to e\gamma \pi N$, in the $\Delta$(1232)-resonance region is measured usingthe longitudinally polarized HERA positron beam and an unpolarized hydrogentarget. Azimuthal Fourier amplitudes of this asymmetry are extracted separatelyfor two channels, $ep\to e\gamma \pi^0 p$ and $ep\to e\gamma \pi^+ n$, from adata set collected with a recoil detector. All asymmetry amplitudes are foundto be consistent with zero.

Beam-helicity asymmetry in associated electroproduction of real photons $ep \to e\gamma \pi N$ in the $\Delta$-resonance region