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We study the impact of a leptophobic Z' gauge boson on the C_{1q} and C_{2q}parameters that describe the low-energy, parity-violating electron-quarkneutral current interaction. We complement previous work by including thepenguin-like vertex corrections, thereby completing the analysis of one-loopcalculation up to O(m^2_q'/M^2_Z') terms. We analyze the sensitivity of theseprobes to the different couplings Z'\bar{u}q (q=u,c,t) and Z'\bar{d}q(q=d,s,b), in a model-independent way that can be applied to any specific Z'scenario. We show that constraints from neutral kaon and heavy flavor studiespreclude significant contributions from flavor non-diagonal couplings exceptfor those involving top quarks. We apply our results to a light Z' with flavordiagonal couplings to up or down quarks, a scenario proposed in the literatureto explained the CDF W plus di-jet anomaly. We find that such a particle wouldnot affect the C_{1q} coefficients, but it would have a sizable impact onC_{2q} couplings that can be probed by future measurements of parity-violatingdeep inelastic scattering of polarized electrons off of deuterium.

Leptophobic Z' Boson and Parity-Violating eD Scattering