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arXiv · 1404.1576

A study of the parity-odd nucleon-nucleon potential

J. de Vries·N. Li·Ulf-G. Meißner·N. Kaiser·X. -H. Liu·S. -L. Zhu
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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 $h_\pi$ turns out to be very small.

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J. de Vries, N. Li, Ulf-G. Meißner, N. Kaiser, X. -H. Liu, S. -L. Zhu. 2014-04-06. A study of the parity-odd nucleon-nucleon potential. https://doi.org/10.1140/epja/i2014-14108-8

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