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Eta photoproduction | | L. Tiator
; G. Knoechlein
; C. Bennhold
; | | Date: |
20 Feb 1998 | | Journal: | PiN Newslett. 14 (1998) 70-78 | | Subject: | nucl-th | | Affiliation: | Universitaet Mainz) and C. Bennhold (The George Washington University | | Abstract: | We present a combined analysis of the new eta photoproduction data for total and differential cross sections, target asymmetry and photon asymmetry. Using basic assumptions, this allows a model-independent extraction of the $E_{2-}$ and $M_{2-}$ multipoles as well as resonance parameters of the $D_{13}(1520)$ state. At higher energy, we show that the photon asymmetry is extremely sensitive to small multipoles that are excited by photons in the helicity 3/2 state. These could be, e.g., the $F_{15}(1680)$, the $F_{17}(1990)$, or the $G_{17}(2190)$ resonances. | | Source: | arXiv, nucl-th/9802064 | | Services: | Forum | Review | PDF | Favorites | |
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