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Twist-four Corrections to Parity-Violating Electron-Deuteron Scattering

By A. V. Belitsky, A. N. Manashov and A. Schafer

Abstract

Parity violating electron-deuteron scattering can potentially provide a clean access to electroweak couplings that are sensitive to physics beyond the Standard Model. However hadronic effects can contaminate their extraction from high-precision measurements. Power-suppressed contributions are one of the main sources of uncertainties along with charge-symmetry violating effects in leading-twist parton densities. In this work we calculate the twist-four correlation functions contributing to the left-right polarization asymmetry making use of nucleon multiparton light-cone wave functions.Comment: 12 pages, 3 figure

Topics: High Energy Physics - Phenomenology
Year: 2011
DOI identifier: 10.1103/PhysRevD.84.014010
OAI identifier: oai:arXiv.org:1104.0511
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