The theta term in QCD sum rules and electric dipole moments of hadrons

Details The theta term in QCD sum rules and electric dipole moments of hadrons The theta term in QCD sum rules and electric dipole moments of hadrons

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aipc..488...25p&link_type=abstract

"High energy physics at the millennium: MRST (Montreal-Rochester-Syracuse-Ontario)'99 "The sundarfest". AIP Conference Proceedi

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Summation Of Perturbation Theory, Other Mesons With S=C=0, Mass<2.5 Gev, Electric And Magnetic Moments

Scientific paper

Using the QCD sum rule approach, we calculate the electric dipole moments of the ρ+ meson and the neutron induced by a vacuum θ-angle to approximately 40-50% precision. In the latter case, we find dn=1.2×10-16θ~e.cm, which combined with the new experimental bound, translates into the limit |θ|<6×10-10.

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