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Three-loop non-singlet matching coefficients for heavy quark currents
- Publication Year :
- 2022
-
Abstract
- We compute the matching coefficients between QCD and non-relativistic QCD for external vector, axial-vector, scalar and pseudo-scalar currents up to three-loop order. We concentrate on the non-singlet contributions and present precise numerical results with an accuracy of about ten digits. For the vector current the results from arXiv:1401.3004 are confirmed, increasing the accuracy by several orders of magnitude.<br />Comment: 9 pages
- Subjects :
- High Energy Physics - Phenomenology
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2203.11231
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevD.105.114007