26-31 July 2021
Mexico City
Mexico/General timezone
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Mexico City -
Hadron Decays, Production and Interactions

Two-pion exchange contributions to the nucleon-nucleon interaction in covariant baryon chiral perturbation theory


  • Mr. Yang XIAO

Primary authors



Employing the covariant baryon chiral perturbation theory, we calculate the LO and NLO two-pion exchange (TPE) contributions to NN interaction up to order O(p3). We compare the so-obtained NN phase shifts with those obtained in the nonrelativistic baryon chiral perturbation theory, which allows us to check the relativistic corrections to the medium-range part of NN interactions. We show that relativistic corrections play an important role in F waves especially the 3F2 partial wave.