Hadronic gamma-Z box corrections in M\oller scattering

Abstract

The possibility of measuring the parity-violating asymmetry in M\oller scattering with sufficient accuracy to determine sin^2 theta_W to 0.1% offers a complementary path to the discovery of new physics to that followed at high energy colliders. We present a new calculation of the gamma-Z box contribution to parity-violating electron-proton scattering, which constitutes an important uncertainty in computing the background to this process. We show that while the gamma-Z correction grows rapidly with energy, it can be relatively well constrained by data from parity-violating inelastic scattering and parton distribution functions.

9 pages, 4 figures, to appear in Phys. Lett. B

References in corpus (3)

• Testing the Standard Model by precision measurement of the weak charges of quarks
• Gamma-Z box contributions to parity violating elastic e-p scattering
• First Measurement of the Neutral Current Excitation of the Delta Resonance on a Proton Target

Cited by in corpus (4)

• Reduced hadronic uncertainty in the determination of $V_{ud}$
• Dispersive Evaluation of the Inner Radiative Correction in Neutron and Nuclear $\beta$-decay
• A dispersive approach to two-photon exchange in elastic electron-proton scattering
• Quark-hadron duality constraints on γZ box corrections to parity-violating elastic scattering