Ultrasoft NLL running of the nonrelativistic O(v) QCD quark potential
- Autor(en)
- André H. Hoang, Maximilian Stahlhofen
- Abstrakt
Using the nonrelativistic effective field theory vNRQCD, we determine the contribution to the next-to-leading logarithmic (NLL) running of the effective quark-antiquark potential at order upsilon (1/m
/k/) from diagrams with one potential and two ultrasoft loops, upsilon being the velocity of the quarks in the c. m. frame. The results are numerically important and complete the description of ultrasoft next-to-next-to-leading logarithmic (NNLL) order effects in heavy quark pair production and annihilation close to threshold.
- Organisation(en)
- Teilchenphysik
- Journal
- Journal of High Energy Physics
- Band
- 2011
- Anzahl der Seiten
- 27
- ISSN
- 1029-8479
- DOI
- https://doi.org/10.1007/JHEP06(2011)088
- Publikationsdatum
- 2011
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103036 Theoretische Physik, 103024 Quantenfeldtheorie, 103034 Teilchenphysik
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/478c7396-9900-4c83-a745-3807a2a749ac