Abstract
We investigate the parity-violating nucleon-nucleon potential as obtained in chiral effective field theory. By using resonance saturation we compare the chiral potential to the more traditional one-meson-exchange potential. In particular, we show how parameters appearing in the different approaches can be compared with each other and demonstrate that analyses of parity violation in proton-proton scattering within the different approaches are in good agreement. In the second part of this work, we extend the parity-violating potential to next-to-next-to-leading order. We show that generally it includes both one-pion- and two-pion-exchange corrections, but the former play no significant role. The two-pion-exchange corrections depend on five new low-energy constants which only become important if the leading-order weak pion-nucleon constant h π turns out to be very small.
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de Vries, J., Li, N., Meißner, UG. et al. A study of the parity-odd nucleon-nucleon potential. Eur. Phys. J. A 50, 108 (2014). https://doi.org/10.1140/epja/i2014-14108-8
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DOI: https://doi.org/10.1140/epja/i2014-14108-8