https://doi.org/10.1051/epjconf/202226201017
Antinucleon-nucleon interaction from chiral effective field theory and its application to neutron-antineutron oscillations
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
* e-mail: j.haidenbauer@fz-juelich.de
** e-mail: meissner@hiskp.uni-bonn.de
Published online: 27 April 2022
An $\bar N$N¯
N potential is reviewed which has been derived within chiral effective field theory by the Jülich-Bonn group. By construction it reproduces $\bar N$N¯
N phase shifts and inelasticities, provided by an elaborate phase-shift analysis of available $\bar p$p¯
p scattering data. This interaction is then employed in a study of neutron-antineutron oscillations in the deuteron. In particular, the deuteron lifetime is considered, and results for it are presented in terms of the free-space n – $\bar n$n¯
oscillation time, based on that $\bar N$N¯
N potential in combination with an NN interaction likewise derived within chiral effective field theory.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
