Bibliographic Details
| Title: |
Matching coefficients in NRQCD to two-loop accuracy |
| Authors: |
Gerlach, Marvin, Mishima, Go, Steinhauser, Matthias |
| Source: |
Phys. Rev. D 100, 054016 (2019) |
| Publication Year: |
2019 |
| Collection: |
High Energy Physics - Phenomenology |
| Subject Terms: |
High Energy Physics - Phenomenology |
| More Details: |
We consider the Lagrange density of non-relativistic Quantum Chromodynamics expanded up to order $1/m^2$, where $m$ is the heavy quark mass, and compute several matching coefficients up to two-loop order. Our results are building blocks for next-to-next-to-next-to-leading logarithmic and next-to-next-to-next-to-next-to-leading order corrections to the threshold production of top quark pairs and the decay of heavy quarkonia. We describe the techniques used for the calculation and provide analytic results for a general covariant gauge.
Comment: 29 pages |
| Document Type: |
Working Paper |
| DOI: |
10.1103/PhysRevD.100.054016 |
| Access URL: |
http://arxiv.org/abs/1907.08227 |
| Accession Number: |
edsarx.1907.08227 |
| Database: |
arXiv |
