Seminar über aktuelle Frage der theoretischen Kernphysik

14.12.10 16:15

Proton structure effects in muonic hydrogen

Carl E. Carlson (William and Mary/Mainz)

A big discrepancy between the proton charge radius recently measured using muonic hydrogen and earlier measurements from electron scattering and from energy shifts in electronic hydrogen motivate a reconsideration of all calculated proton structure contributions to the Lamb shift. We will briefly review the discrepancy and the known theoretical work, comment on possible explanations from exotic physics, and then present a specific reconsideration of the two-photon contributions to the muonic Lamb shift. Our results differ from the existing literature, although not nearly by enough to explain the charge radius discrepancy.


(Seminarraum II)

Kategorie: Kernphysik