$N^{\ast }\to N{\eta }^{\prime }$ decays from photoproduction of ${\eta }^{\prime }$-mesons off protons

Abstract

A study of the partial-wave content of the $\gamma p\to {\eta }^{\prime }p$ reaction in the fourth resonance region is presented, which has been prompted by new measurements of polarization observables for that process. Using the Bonn-Gatchina partial-wave formalism, the incorporation of new data indicates that the $N(1895)1/2^{-}$, $N(1900)3/2^{+}$, $N(2100)1/2^{+}$, and $N(2120)3/2^{-}$ are the most significant contributors to the photoproduction process. New results for the branching ratios of the decays of these more prominent resonances to $N{\eta }^{\prime }$ final states are provided; such branches have not been indicated in the most recent edition of the Review of Particle Properties. Based on the analysis performed here, predictions for the helicity asymmetry $E$ for the $\gamma p\to {\eta }^{\prime }p$ reaction are presented.

arXiv comment7 pages, 5 figures, 3 tables

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Cited by in corpus (10)

• 50 Years of Quantum Chromodynamics
• Etaprime and Eta Mesons with Connection to Anomalous Glue
• Light Baryon Spectroscopy
• Eta and Etaprime Photoproduction on the Nucleon with the Isobar Model EtaMAID2018
• New data on $\vec{\gamma }\vec{p}\to \eta p$ with polarized photons and protons and their implications for $N^{\ast }\to N\eta$ decays
• Proton-${\eta }^{\prime }$ interactions at threshold
• Eta-nucleon and eta-prime-nucleon coupling constants in QCD and the role of gluons
• Spectral function of the ${\eta }^{\prime }$ meson in nuclear medium based on phenomenological models
• Analysis of the differential cross section and photon beam asymmetry data for $\gamma p\to {\eta }^{\prime }p$
• Possible ${\eta }^{\prime }d$ bound state and its $s$-channel formation in the $\gamma d\to \eta d$ reaction