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Nuclear Theory

arXiv:nucl-th/9401014 (nucl-th)
[Submitted on 19 Jan 1994]

Title:Meson Photo- and Electroproduction

Authors:Lothar Tiator
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Abstract: Photo- and electroproduction of pions and eta-mesons is studied on the nucleon. The formalism of such reactions is presented including polarization degrees of freedom and theoretical approaches are discussed. In particular, the threshold and $\Delta$-resonance region of pion photoproduction is considered and recent developments on low energy theorems (LET) and the E2/C2 quadrupole excitation of the $\Delta$ are presented. For eta photoproduction we show our calculations for the threshold region of the new Mainz experiment and demonstrate the sensitivity of this reaction to the elementary $\eta NN$ coupling and the resonance parameters of the $S_{11}(1535)$. In nuclear applications we point out the importance and advantage of light nuclei as $d$, $^3H$, $^3He$ and $^4He$ for the isospin structure of the reactions as well as for medium effects of the nucleon resonances.
Comments: 40 pages, 22 figures (available from the author) Lecture notes given at the II TAPS workshop, Alicante 1993 Mainz preprint MKPH-T-93-16
Subjects: Nuclear Theory (nucl-th)
Cite as: arXiv:nucl-th/9401014
  (or arXiv:nucl-th/9401014v1 for this version)
  https://doi.org/10.48550/arXiv.nucl-th/9401014

Submission history

From: [view email]
[v1] Wed, 19 Jan 1994 15:04:11 UTC (33 KB)
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