6533b86ffe1ef96bd12cdf0f
RESEARCH PRODUCT
Forward Compton scattering with weak neutral current: Constraints from sum rules
Xilin ZhangXilin ZhangXilin ZhangMikhail Gorchteinsubject
PhysicsNuclear and High Energy PhysicsNuclear TheoryNeutral currentCompton scatteringFOS: Physical sciencesDuality (optimization)Charge (physics)Interference (wave propagation)lcsh:QC1-999Nuclear Theory (nucl-th)Moment (mathematics)High Energy Physics - PhenomenologyTheoretical physicsHigh Energy Physics - Phenomenology (hep-ph)Sum rule in quantum mechanicsNuclear Experiment (nucl-ex)NucleonNuclear Experimentlcsh:Physicsdescription
We generalize forward real Compton amplitude to the case of the interference of the electromagnetic and weak neutral current, formulate a low-energy theorem, relate the new amplitudes to the interference structure functions and obtain a new set of sum rules. We address a possible new sum rule that relates the product of the axial charge and magnetic moment of the nucleon to the 0th moment of the structure function $g_5(\nu,0)$. We apply the GDH and the finite energy sum rule for constraining the dispersive $\gamma Z$-box correction to the proton's weak charge.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-07-01 |