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/

Zendy Plus

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

Zendy Tools

Zendy Open

Photon beam asymmetry $\Sigma$ measurements for $\omega$ photoproduction inthe reaction $\vec{\gamma} p \to \omega p$ are reported for photon energiesfrom 1.152 to 1.876 GeV. Data were taken using a linearly-polarized taggedphoton beam, a cryogenic hydrogen target, and the CLAS spectrometer in Hall Bat Jefferson Lab. The measurements obtained markedly increase the size of thedatabase for this observable, extend coverage to higher energies, and resolvediscrepancies in previously published data. Comparisons of these new resultswith predictions from a chiral-quark-based model and from a dynamicalcoupled-channels model indicate the importance of interferences between$t$-channel meson exchange and $s$- and $u$-channel contributions, underscoringsensitivity to the nucleon resonances included in those descriptions.Comparisons with the Bonn-Gatchina partial-wave analysis indicate the $\Sigma$data reported here help to fix the magnitudes of the interference terms betweenthe leading amplitudes in that calculation (Pomeron exchange and the resonantportion of the $J^P=3/2^+$ partial wave), as well as the resonant portions ofthe smaller partial waves with $J^P$= $1/2^-$, $3/2^-$, and $5/2^+$.

Photon beam asymmetry $\Sigma$ in the reaction $\vec{\gamma} p \to p \omega$ for $E_\gamma$ = 1.152 to 1.876 GeV