https://doi.org/10.1140/epja/i2014-14108-8
Regular Article - Theoretical Physics
A study of the parity-odd nucleon-nucleon potential
1
Institute for Advanced Simulation, Institut für Kernphysik, and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425, Jülich, Germany
2
Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115, Bonn, Germany
3
Physik Department T39, Technische Universität München, D-85747, Garching, Germany
4
Collaborative Innovation Center of Quantum Matter, 100871, Beijing, China
5
Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871, Beijing, China
* e-mail: j.de.vries@fz-juelich.de
Received:
16
April
2014
Revised:
24
May
2014
Accepted:
28
May
2014
Published online:
7
July
2014
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.
© SIF, Springer-Verlag Berlin Heidelberg, 2014
