Best Values for the CP-odd Meson-Nucleon Couplings from Supersymmetry

Details Best Values for the CP-odd Meson-Nucleon Couplings from Supersymmetry Best Values for the CP-odd Meson-Nucleon Couplings from Supersymmetry

2001-09-06

arxiv.org/abs/hep-ph/0109044v2

Phys.Lett. B530 (2002) 123-128

Physics

High Energy Physics

High Energy Physics - Phenomenology

Reference added

Scientific paper

10.1016/S0370-2693(02)01263-7

In the supersymmetric models, the dominant sources of the hadronic flavor-diagonal CP violation at low energy are the theta term and the chromoelectric dipole moments of quarks. Using QCD sum rules, we estimate the preferred range and the best values for the CP-odd meson-nucleon coupling constants induced by these operators. When the theta term is removed by the axion mechanism, the size of the most important isospin triplet pion-nucleon coupling is estimated to be \bar g_{\pi NN}^{(1)} = 2 times 10^{-12}(tilde d_u - tilde d_d), where chromoelectric dipole moments are given in units of 10^{-26} cm.

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