Model-independent determination of the Lamb shift in muonic hydrogen and the proton radius
We obtain a model-independent expression for the Lamb shift in muonic hydrogen. This expression includes the leading logarithmic terms, as well as the leading hadronic effects. The latter are controlled by the chiral theory, which allows for their model-independent determination. In this paper we gi...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2015 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/100998 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/100998 |
| Access Level: | acceso abierto |
| Palabra clave: | 53 Chiral perturbation-theory Baryon axial currents Polarizability contribution Vacuum-polarization Atoms 4TH-order Recoil Energy Size QCD Física (Física) 22 Física |
| Sumario: | We obtain a model-independent expression for the Lamb shift in muonic hydrogen. This expression includes the leading logarithmic terms, as well as the leading hadronic effects. The latter are controlled by the chiral theory, which allows for their model-independent determination. In this paper we give the missing piece for their complete expression including the pion and Delta particles. Out of this analysis, and the experimental measurement of the Lamb shift in muonic hydrogen, we determine the electromagnetic proton radius: fm. This number is at variance with respect to the CODATA value. The accuracy of our result is limited by uncomputed terms of . This parametric control of the uncertainties allows us to obtain a model-independent estimate of the error, which is dominated by hadronic effects. |
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