https://doi.org/10.1051/epjconf/201921207005
The neutron EDM and bounds on rare decays of eta and eta-prime mesons
1
Department of Physics, Tomsk State University, 634050 Tomsk, Russia
2
Institut für Theoretische Physik, Universität Tübingen, Kepler Center for Astro and Particle Physics, Auf der Morgenstelle 14, D-72076 Tübingen, Germany
3
Departamento de Física y Centro Científico Tecnológico de Valparaíso-CCTVal, Universidad Técnica Federico Santa María, Casilla 110-V, Valparaíso, Chile
* e-mail: zhevlakov@phys.tsu.ru
Published online: 17 June 2019
We complete our derivation of upper limits on the CP violating ηππ and η‘ππ couplings from an analysis of their two-loop contribution to the neutron electric dipole moment (nEDM). As a result we obtain numerical upper limits for the ηππ and η‘ππ branchings and couplings which are important for planned experiments at JLab. We also derive upper limits on the CP violating θ̅parameter of QCD θ̅< 2.8 × 10−10
© The Authors, published by EDP Sciences, 2019
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