Publications
Publication Information
| Title | Forward doubly-virtual Compton scattering off an unpolarised deuteron in pionless effective field theory |
| Authors | Vadim Lensky, Astrid Hiller Blin, Vladimir Pascalutsa |
| JLAB number | JLAB-THY-21-3417 |
| LANL number | arXiv:2109.08223 |
| Other number | DOE/OR/23177-5235 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | High Energy Physics (HEP) |
|
Journal Compiled for Physical Review C Volume 104 Page(s) 054003 Refereed | |
| Publication Abstract: | We calculate the forward unpolarised doubly-virtual Compton scattering (VVCS) off the deuteron in the framework of pionless effective field theory, up to next-to-next-to-next-to-leading order (N3LO) for the longitudinal and next-to-leading order (NLO) for the transverse amplitude. The charge elastic form factor of the deuteron, obtained from the residue of the longitudinal VVCS amplitude, is used to extract the value of the single unknown two-nucleon one-photon contact coupling that enters the longitudinal amplitude at N3LO. We also study the lowest spin-independent generalised polarisabilities of the deuteron. The calculated unpolarised VVCS amplitude provides a high-precision model-independent input for a future calculation of the two-photon-exchange correction to the Lamb shift of muonic deuterium. |
| Experiment Numbers: | |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevC.104.054003 |
| Accepted Manuscript: | 2109.08223.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |