Nucleon-nucleon scattering with perturbative pions: The uncoupled $P$-wave channels

Abstract

The uncoupled $P$-wave channels of nucleon-nucleon scattering are studied in an effective field theory (EFT) including a perturbative dibaryon field and perturbative pions. Good agreement between EFT results and the Nijmegen partial wave analysis is observed up to a center-of-mass momentum $k\approx 400$ MeV. Using a method that combines renormalization and fitting together, the long-standing convergence problem of EFTs in these channels with perturbative pions, for momenta above the pion mass is addressed from a new perspective.

Comments: 16 pages, 7 figures, 5 tables. This version corresponds to the published version within Phys. Rev. C. I have corrected a few typos and added two references