The journal of high energy physics, 2019-02, Vol.2019 (2), p.1-16, Article 172
2019
Details
- Autor(en) / Beteiligte
- Titel
- Four-loop quark form factor with quartic fundamental colour factor
- Ist Teil von
- The journal of high energy physics, 2019-02, Vol.2019 (2), p.1-16, Article 172
- Ort / Verlag
- Berlin/Heidelberg: Springer Berlin Heidelberg
- Erscheinungsjahr
- 2019
- Link zum Volltext
- Quelle
- Free E-Journal (出版社公開部分のみ）
- Beschreibungen/Notizen
- A bstract We analytically compute the four-loop QCD corrections for the colour structure ( d F abcd ) 2 to the massless non-singlet quark form factor. The computation involves non-trivial non-planar integral families which have master integrals in the top sector. We compute the master integrals by introducing a second mass scale and solving differential equations with respect to the ratio of the two scales. We present details of our calculational procedure. Analytical results for the cusp and collinear anomalous dimensions, and the finite part of the form factor are presented. We also provide analytic results for all master integrals expanded up to weight eight.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1029-8479eISSN: 1029-8479DOI: 10.1007/JHEP02(2019)172Titel-ID: cdi_doaj_primary_oai_doaj_org_article_e3f3fecb24634dc0a30f15911fefe16d
- Format
- –
- Schlagworte
- Classical and Quantum Gravitation, Color, Differential equations, Elementary Particles, Form factors, High energy physics, Integrals, Mathematical analysis, NLO Computations, Physics, Physics and Astronomy, QCD Phenomenology, Quantum Field Theories, Quantum Field Theory, Quantum Physics, Quarks, Regular Article - Theoretical Physics, Relativity Theory, String Theory, Weight