Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-08-05
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, 6 figures. Plenary talk at XIV International Conference on Hadron Spectroscopy (hadron2011), 13-17 June 2011, Munich
Scientific paper
Recently the muonic hydrogen lamb shift has been measured with unprecedented accuracy, allowing for a precise determination of the proton radius. This determination is 5 sigma away from the previous CODATA value obtained from (mainly) the hydrogen lamb shift and the electron-proton scattering. Within an effective field theory formalism, I will define the proton radius and briefly review some aspects of the theoretical prediction for the muonic hydrogen lamb shift, studying both the pure QED-like computation and the hadronic effects.
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