Perturbative chiral nucleon–nucleon potential for the 3P0 partial wave

Rui Peng,Songlin Lyu,Bingwei Long

Figure 2. The solid circles are the empirical phase shifts from the SAID program [26, 27]. The black and red lines correspond to the nonperturbative and perturbative cases, respectively. The dashed, dashed–dotted and solid correspond respectively to LO, N2LO and N3LO for the nonperturbative case, NLO, N2LO and N3LO for the perturbative case. The values of cutoff Λ (MeV) are marked at top left of each figure.