Two-photon exchange correction to2S−2Psplitting in muonicHe3ions

6533b7d2fe1ef96bd125df62

RESEARCH PRODUCT

Two-photon exchange correction to2S−2Psplitting in muonicHe3ions

Marc Vanderhaeghen Mikhail Gorchtein Carl E. Carlson

subject

Physics Quasielastic scattering 010308 nuclear & particles physics Physics beyond the Standard Model Inelastic scattering 01 natural sciences Ion Lamb shift Nuclear physics Dispersion relation 0103 physical sciences Effective field theory Atomic physics 010306 general physics Energy (signal processing)

description

We calculate the two-photon exchange correction to the Lamb shift in muonic $^{3}\mathrm{He}$ ions within the dispersion relations framework. Part of the effort entailed making analytic fits to the electron-$^{3}\mathrm{He}$ quasielastic scattering data set, for purposes of doing the dispersion integrals. Our result is that the energy of the $2S$ state is shifted downwards by two-photon exchange effects by 15.14(49) meV, in good accord with the result obtained from a potential model and effective field theory calculation.

year	journal	country	edition	language
2017-01-27	Physical Review A

https://doi.org/10.1103/physreva.95.012506

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