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The Muonic Hydrogen Lamb Shift Experiment at PSI
Kottmann, F.; Amir, W.; Biraben, F.; Conde, C.; Dhawan, S.; Hänsch, T.; Hartmann, F.; Hughes, V.; Huot, O.; Indelicato, P.; Julien, L.; Knowles, P.Abstract A measurement of the 2S Lamb shift in muonic hydrogen (µ-p) is being prepared at the Paul Scherrer Institute (PSI). The goal of the experiment is to measure the energy difference ?E(25 P 3/2-23 S 1/2) by laser spectroscopy (?˜6µm) to a precision of 30 ppm and to deduce the root mean square (rms) proton charge radius with 10-3 relative accuracy, 20 times more precise than presently known. An important...
Experiment to measure the Lamb shift in muonic hydrogen
Pohl, R.; Biraben, F.; Conde, C. A. N.; Gay, C. Donche; Hänsch, T. W.; Hartmann, F. J.; Hauser, P.; Hughes, V. W.; Huot, O.; Indelicato, P.; Knowles, P.Abstract The contribution of the root mean square (RMS) proton charge radius to the Lamb shift (2S–2P energy difference) in muonic hydrogen (µp) amounts to 2%. Apart from the uncertainty on this charge radius, theory predicts the Lamb shift with a precision on the ppm level. We are going to measure ?E (2 S1/2(F=1)–2 P3/2(F=2)) in a laser resonance experiment to a precision of 30 ppm (i.e., 10% of the natural l...
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