Abstract
To shed light on the deuteron radius puzzle we analyze the theoretical uncertainties of the nuclear structure corrections to the Lamb shift in muonic deuterium. We find that the discrepancy between the calculated two-photon exchange correction and the corresponding experimentally inferred value by Pohl et al. [1] remain. The present result is consistent with our previous estimate, although the discrepancy is reduced from 2.6 σ to about 2 σ. The error analysis includes statistic as well as systematic uncertainties stemming from the use of nucleon–nucleon interactions derived from chiral effective field theory at various orders. We therefore conclude that nuclear theory uncertainty is more likely not the source of the discrepancy.
| Original language | American English |
|---|---|
| Pages (from-to) | 377-383 |
| Number of pages | 7 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 778 |
| DOIs | |
| State | Published - 10 Mar 2018 |
Bibliographical note
Funding Information:We would like to thank Angelo Calci for providing us with the chiral potentials at N 4 LO. We are grateful to Randolf Pohl and Hartmuth Arenhövel for useful discussions. This work was supported in parts by the Natural Sciences and Engineering Research Council ( NSERC SAPIN-2015-00031 ), the National Research Council of Canada , by the Deutsche Forschungsgemeinschaft DFG through the Collaborative Research Center [The Low-Energy Frontier of the Standard Model ( SFB 1044 )], and through the Cluster of Excellence [Precision Physics, Fundamental Interactions and Structure of Matter (PRISMA)], by the Swedish Research Council under Grant No. 2015-00225 , and by the Marie Sklodowska Curie Actions , Cofund, Project INCA 600398 .
Funding Information:
We would like to thank Angelo Calci for providing us with the chiral potentials at N4LO. We are grateful to Randolf Pohl and Hartmuth Arenhövel for useful discussions. This work was supported in parts by the Natural Sciences and Engineering Research Council (NSERC), the National Research Council of Canada, by the Deutsche Forschungsgemeinschaft DFG through the Collaborative Research Center [The Low-Energy Frontier of the Standard Model (SFB 1044)], and through the Cluster of Excellence [Precision Physics, Fundamental Interactions and Structure of Matter (PRISMA)], by the Swedish Research Council under Grant No. 2015-00225, and by the Marie Sklodowska Curie Actions, Cofund, Project INCA 600398.
Publisher Copyright:
© 2018