Off-Shell Effective Lagrangian for NRQCD and Heavy Quarks Effective Theory
arXiv:hep-ph/0007089 · doi:10.1142/S0217732301004583
Abstract
derivation of the effective lagrangian for non-relativistic quantum chromodynamics and the heavy quarks effective field theory is given. Our calculation provides of a simple and systematic method of calculation of the full off shell effective lagrangian at tree level including all the corrections.
some parts clarified and two references added