Two-Loop Matching Coefficients for Heavy Quark Currents

Details Two-Loop Matching Coefficients for Heavy Quark Currents Two-Loop Matching Coefficients for Heavy Quark Currents

2006-04-07

arxiv.org/abs/hep-ph/0604072v1

Phys.Lett. B638 (2006) 209-213

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages

Scientific paper

10.1016/j.physletb.2006.05.023

In this paper 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.

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