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Energy level displacement of the excited nl state of pionic hydrogen

A. N. Ivanov·M. Faber·A. Hirtl·J. Marton·N. I. Troitskaya
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Abstract

The energy level displacements of the excited nl states of pionic hydrogen and the contribution of the ns -> 1s transitions and the (pi^-p)_Coul -> 1s transitions of the pi^-p pair, coupled by the attractive Coulomb field in the S-wave state with a continuous energy spectrum, to the shift of the energy level of the ground state of pionic hydrogen, caused by strong low-energy interactions, are calculated within a quantum field theoretic, relativistic covariant and model-independent approach developed in nucl-th/0306047.

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A. N. Ivanov, M. Faber, A. Hirtl, J. Marton, N. I. Troitskaya. 2003-11-24. Energy level displacement of the excited nl state of pionic hydrogen. https://doi.org/10.1140/epja%2Fi2003-10134-y

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