N → Nη decays from photoproduction of η-mesons off protons

A. V. Anisovich, V. Burkert, P. M. Collins, Michael Dugger, E. Klempt, V. A. Nikonov, Barry Ritchie, A. V. Sarantsev, U. Thoma

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

A study of the partial-wave content of the γp→ηp 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 Nη 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 γp→ηp reaction are presented.

Original languageEnglish (US)
Pages (from-to)247-252
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume772
DOIs
StatePublished - Sep 10 2017

Keywords

  • Baryon spectroscopy
  • Meson photoproduction
  • Polarization observables

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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