Three-loop massive form factors: complete light-fermion corrections for the vector current
Abstract:
We compute the three-loop QCD corrections to the massive quark-anti-quark-photon form factors F1 and F2 involving a closed loop of massless fermions. This subset is gauge invariant and contains both planar and non-planar contributions. We perform the reduction using FIRE and compute the master integrals with the help of differential equations. Our analytic results can be expressed in terms of Goncharov polylogarithms. We provide analytic results for all master integrals which are not present in the large-N c calculation considered in refs. [1, 2].
| Zugehörige Institution(en) am KIT | Institut für Theoretische Teilchenphysik (TTP) |
| Publikationstyp | Zeitschriftenaufsatz |
| Jahr | 2018 |
| Sprache | Englisch |
| Identifikator | ISSN: 1029-8479, 1126-6708 URN: urn:nbn:de:swb:90-820476 KITopen ID: 1000082047 |
| Erschienen in | Journal of high energy physics |
| Band | 2018 |
| Heft | 3 |
| Seiten | Art.Nr.: 136 |
| Bemerkung zur Veröffentlichung | Gefördert durch SCOAP3 |
| Schlagworte | NLO Computations; QCD Phenomenology |