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Analysis of the Low-Energy Theorem for gamma p o p pi^0 | | H.W.L. Naus
; R.M. Davidson
; | | Date: |
28 Jun 1995 | | Journal: | Z.Phys. A354 (1996) 329-332 | | Subject: | nucl-th | | Affiliation: | Institute for Theoretical Physics, University of Heidelberg, Heidelberg, Germany) and R.M. Davidson (National Institute for Nuclear Physics and High Energy Physics, Amsterdam, The Netherlands | | Abstract: | The derivation of the `classical’ low-energy theorem (LET) for gamma p
ightarrow ppi^0 is re-examined and compared to chiral perturbation theory. Both results are correct and are not contradictory; they differ because different expansions of the same quantity are involved. Possible modifications of the extended partially conserved axial-vector current relation, one of the starting points in the derivation of the LET, are discussed. An alternate, more transparent form of the LET is presented. | | Source: | arXiv, nucl-th/9506025 | | Services: | Forum | Review | PDF | Favorites | |
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