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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
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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.

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V. E. Lyubovitskij, Th. Gutsche, Amand Faessler, R. Vinh Mau. 2001-09-24. piN scattering and electromagnetic corrections in the perturbative chiral quark model. https://doi.org/10.1016/s0370-2693(01)01142-x

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