Second Class Current in QCD Sum Rules
Abstract
Induced tensor charge of the nucleon gT, which originates from G-parity violation, is evaluated from QCD sum rules. We find that gT/gA with gA being the axial charge is -0.0152 0.0053 which is proportional to u-d quark mass difference. This result is small compared to preliminary analysis of the experiment, but is consistent with the estimate in the MIT bag model.
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