Massive Vector Form Factors to Three Loops
Abstract:
We compute the three-loop nonsinglet corrections to the photon-quark form factors taking into account the full dependence on the virtuality of the photon and the quark mass. We combine the method of differential equations in an effective way with expansions around regular and singular points. This allows us to obtain results for the form factors with an accuracy of about eight to twelve digits in the whole kinematic range.
| Zugehörige Institution(en) am KIT | Institut für Astroteilchenphysik (IAP) Institut für Theoretische Teilchenphysik (TTP) |
| Publikationstyp | Zeitschriftenaufsatz |
| Publikationsmonat/-jahr | 04.2022 |
| Sprache | Englisch |
| Identifikator | ISSN: 0031-9007, 1079-7114 KITopen-ID: 1000148913 |
| HGF-Programm | 51.11.01 (POF IV, LK 01) Teilchenphysik |
| Erschienen in | Physical Review Letters |
| Verlag | American Physical Society (APS) |
| Band | 128 |
| Heft | 17 |
| Seiten | Art.-Nr. 172003 |
| Vorab online veröffentlicht am | 29.04.2022 |
| Nachgewiesen in | Web of Science Scopus Dimensions |