TY - JOUR
T1 - Best values for the CP-odd meson-nucleon couplings from supersymmetry
AU - Pospelov, Maxim
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2002/3/28
Y1 - 2002/3/28
N2 - 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 ḡπNN(1) = 2 × 10-12(d̃u - d̃d), where chromoelectric dipole moments are given in units of 10-26 cm.
AB - 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 ḡπNN(1) = 2 × 10-12(d̃u - d̃d), where chromoelectric dipole moments are given in units of 10-26 cm.
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U2 - 10.1016/S0370-2693(02)01263-7
DO - 10.1016/S0370-2693(02)01263-7
M3 - Article
AN - SCOPUS:0037187685
SN - 0370-2693
VL - 530
SP - 123
EP - 128
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1-4
ER -