| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8199023 | Physics Letters B | 2006 | 5 Pages |
Abstract
In this Letter we consider the matching coefficients up to two loops between Quantum Chromodynamics (QCD) and Non-Relativistic QCD (NRQCD) for the vector, axial-vector, scalar and pseudo-scalar currents. The structure of the effective theory is discussed and analytical results are presented. Particular emphasis is put on the singlet diagrams.
Related Topics
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Authors
B.A. Kniehl, A. Onishchenko, J.H. Piclum, M. Steinhauser,