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Resonance region structure functions and parity-violating deep inelastic scattering
Carlson, Carl E. Rislow, Benjamin C.
Carlson, Carl E.
Rislow, Benjamin C.
Abstract
The primary motive of parity-violating deep inelastic scattering experiments has been to test the standard model, particularly the axial couplings to the quarks, in the scaling region. The measurements can also test for the validity of models for the off-diagonal structure functions F-1,2,3(gamma Z)(x, Q(2)) in the resonance region. The off-diagonal structure functions are important for the accurate calculation of the gamma Z-box correction to the weak charge of the proton. Currently, with no data to determine F-1,2,3(gamma Z)(x, Q(2)) directly, models are constructed by modifying existing fits to electromagnetic data. We present the asymmetry value for deuteron and proton targets predicted by several different F-1,2,3(gamma Z)(x, Q(2)) models and demonstrate that there are notable disagreements.
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2012-01-01
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Physics
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https://doi.org/10.1103/PhysRevD.85.073002