Ultrasoft NLL running of the nonrelativistic O(v) QCD quark potential
- Author(s)
- André H. Hoang, Maximilian Stahlhofen
- Abstract
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(s)
- Particle Physics
- Journal
- Journal of High Energy Physics
- Volume
- 2011
- No. of pages
- 27
- ISSN
- 1029-8479
- DOI
- https://doi.org/10.1007/JHEP06(2011)088
- Publication date
- 2011
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103036 Theoretical physics, 103024 Quantum field theory, 103034 Particle physics
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/ultrasoft-nll-running-of-the-nonrelativistic-ov-qcd-quark-potential(478c7396-9900-4c83-a745-3807a2a749ac).html