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

Rui Peng,Songlin Lyu,Bingwei Long

Figure 1. On-shell matrix elements of

${}^{3}{P}_{0}$

potentials as functions of the center-of-mass momentum. The red dashed, blue dashed–dotted and black solid correspond respectively to

${V}_{1\pi }(k,k)$

${C}_{0}{k}^{2}$

and

${V}_{1\pi }(k,k)+{C}_{0}{k}^{2}$

. C₀ is fitted in the nonperturbative OPE scheme (11) for

${\rm{\Lambda }}=400\,\,\mathrm{MeV}$