384 citations · 2.3k across the 114 of their papers we have counts for
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Energy level displacement of the excited nl state of pionic hydrogen
A. N. Ivanov, M. Faber, A. Hirtl +2
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…
On kaonic hydrogen. Quantum field theoretic and relativistic covariant approach
A. N. Ivanov, M. Cargnelli, M. Faber +3
We study kaonic hydrogen, the bound K^-p state A_(Kp). Within a quantum field theoretic and relativistic covariant approach we derive the energy level displacement of the ground st…
On pionic hydrogen. Quantum field theoretic, relativistic covariant and model-independent approach
A. N. Ivanov, M. Faber, A. Hirtl +2
We consider pionic hydrogen A_(pi p), the bound pi^- p state. Within the quantum field theoretic and relativistic covariant approach we calculate the shift and width of the energy…
Muon transfer from deuterium to helium
M. Augsburger, P. Ackerbauer, W. H. Breunlich +23
We report on an experiment at the Paul Scherrer Institute, Villigen, Switzerland measuring x rays from muon transfer from deuterium to helium. Both the ground state transfer via th…