… Integrating out the soft scale leads to a so far elusive effective field theory which we call
potential NRQCD (pNRQCD). We claim that this effective … We present some original
results for the above mentioned effective field theories. In section 2 we give the matching
coefficients for the four-quark operators at one loop for NRQED and also for NRQCD in the
case of different quark masses. In section 3 we put forward our proposal for pNRQCD and
give some results for pNRQED. …