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piN scattering and electromagnetic corrections in the perturbative chiral quark model | V. E. Lyubovitskij
; Th. Gutsche
; Amand Faessler
; R. Vinh Mau
; | Date: |
16 Aug 2001 | Journal: | Phys.Lett. B520 (2001) 204-212 | Subject: | hep-ph | Affiliation: | Tuebingen U.), Th. Gutsche (Tuebingen U.), Amand Faessler (Tuebingen U.) and R. Vinh Mau (Paris U. | Abstract: | We apply the perturbative chiral quark model to give predictions for the electromagnetic O(p^2) low-energy couplings of the ChPT effective Lagrangian that define the electromagnetic mass shifts of nucleons and first-order (e^2) radiative corrections to the piN scattering amplitude. We estimate the leading isospin-breaking correction to the strong energy shift of the pi(-)p atom in the 1s state, which is relevant for the experiment "Pionic Hydrogen" at PSI. | Source: | arXiv, hep-ph/0108134 | Services: | Forum | Review | PDF | Favorites |
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