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hep-ph1999
Spin polarisability of the nucleon at NLO in the chiral expansion
K. B. Vijaya Kumar, Judith A. McGovern, Michael C. Birse
We present a calculation of the fourth-order (NLO) contribution to spin-dependent forward Compton scattering in heavy-baryon chiral perturbation theory. No low-energy constants, ex…
hep-ph1998
The Wilson Renormalisation Group Applied to the Potential in NN Scattering
Michael C. Birse, Judith A. McGovern, Keith G. Richardson
Nonrelativistic two-body scattering by a short-ranged potential is studied using the renormalisation group. Two fixed points are identified: a trivial one and one describing system…
hep-ph1997
Renormalisation and power counting in effective field theories for nucleon-nucleon scattering
Keith G. Richardson, Michael C. Birse, Judith A. McGovern
The renormalisation of NN scattering in theories with zero-range interactions is examined using a cut-off regularisation and taking the cut-off to infinity. Inclusion of contact in…