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The current theoretical status of the Lamb shift in He+ is discussed. Recentcalculations of two-loop binding corrections to the Lamb shift significantlyshift the theoretical value of the "classic" Lamb shift in He+, i.e. of the2S_1/2-2P_1/2-interval. In this brief research note, we present a new(theoretical) value for this interval which reads 14041.474(42) Mhz. Thetheoretical uncertainty is reduced as well as the discrepancy between theoryand experiment. Planned measurements should be of help in further elucidatingthe situation.Comment: 6 pages, LaTe

The 2S1/22P1/2 Lamb shift in He+

The 2S_1/22P_1/2 Lamb shift in He⁺