Radiation pions in two-nucleon effective field theory

Details Radiation pions in two-nucleon effective field theory Radiation pions in two-nucleon effective field theory

1999-01-22

arxiv.org/abs/nucl-th/9901064v3

Nucl.Phys. A665 (2000) 164-182

Physics

Nuclear Physics

Nuclear Theory

21 pages, 3 figs, journal version

Scientific paper

10.1016/S0375-9474(99)00368-1

For interactions involving two or more nucleons it is useful to divide pions into three classes: potential, radiation, and soft. The momentum threshold for the production of radiation pions is $Q_r = \sqrt{M_N m_\pi}$. We show that radiation pions can be included systematically with a power counting in $Q_r$. The leading order radiation pion graphs which contribute to NN scattering are evaluated in the PDS and OS renormalization schemes and are found to give a small contribution. The power counting for soft pion contributions is also discussed.

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