Evidence for a backward peak in the γd → π0d cross section near the η threshold
Document Type
Article
Publication Date
2010
Abstract
High-quality cross sections for the reaction γd → π0 d have been measured using the CLAS at Jefferson Lab over a wide energy range near and above the η-meson photoproduction threshold. At backward c.m. angles for the outgoing pions, we observe a resonance-like structure near E γ = 700 MeV. Our model analysis shows that it can be explained by η excitation in the intermediate state. The effect is the result of the contribution of the N(1535)S 11-resonance to the amplitudes of the subprocesses occurring between the two nucleons and of a two-step process in which the excitation of an intermediate η-meson dominates.
Publication Title
The European Physical Journal A
Repository Citation
Ilieva, Y.; Biselli, Angela; and CLAS Collaboration, "Evidence for a backward peak in the γd → π0d cross section near the η threshold" (2010). Physics Faculty Publications. 125.
https://digitalcommons.fairfield.edu/physics-facultypubs/125
Published Citation
Y. Ilieva et al. [CLAS Collaboration], "Evidence for a backward peak in the γd → π0d cross section near the η threshold," The European Physical Journal A 43.3 (2010) p.261-267.
DOI
10.1140/epja/i2010-10918-x
Peer Reviewed
Comments
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