Autoren:	Lensky, Vadim Hagelstein, Franziska Pascalutsa, Vladimir
Titel:	A reassessment of nuclear effects in muonic deuterium using pionless effective field theory at N3LO
Online-Publikationsdatum:	17-Apr-2023
Erscheinungsdatum:	2022
Sprache des Dokuments:	Englisch
Zusammenfassung/Abstract:	We provide a systematic assessment of the order-α5 nuclear contributions to the Lamb shift of muonic deuterium, including the accompanying radiative corrections due to vacuum polarisation, up to nextto-next-to-next-to-leading order (N3LO) within the pionless effective field theory (π/ EFT). We also evaluate higher-order corrections due to the single-nucleon structure, which are expected to be the most important corrections beyond N3LO. We find a correlation between the deuteron charge and Friar radii, which can be useful to judge the quality of charge form factor parametrisations. We refine the theoretical description of the 2γ -exchange contribution, especially in the elastic contribution and the radiative corrections, ameliorating the original discrepancy between theory and experiment in the size of 2γ -exchange effects. Based on the experimental Lamb shift of muonic deuterium, we obtain the deuteron charge radius, rd(μD) = 2.12763(13)exp(77)theory fm, which is consistent with (but less precise than) the value obtained by combining the H-D isotope shift with the muonic-hydrogen Lamb shift. The theory uncertainty is evaluated using a Bayesian procedure and is dominated by the truncation of the π/ EFT series.
DDC-Sachgruppe:	530 Physik 530 Physics
Veröffentlichende Institution:	Johannes Gutenberg-Universität Mainz
Organisationseinheit:	FB 08 Physik, Mathematik u. Informatik
Veröffentlichungsort:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-8916
Version:	Published version
Publikationstyp:	Zeitschriftenaufsatz
Weitere Angaben zur Dokumentart:	Scientific article
Nutzungsrechte:	CC BY
Informationen zu den Nutzungsrechten:	https://creativecommons.org/licenses/by/4.0/
Zeitschrift:	Physics letters : B 835
Seitenzahl oder Artikelnummer:	137500
Verlag:	Elsevier
Verlagsort:	Amsterdam
Erscheinungsdatum:	2022
ISSN:	1873-2445
DOI der Originalveröffentlichung:	10.1016/j.physletb.2022.137500
Enthalten in den Sammlungen:	DFG-491381577-D