Precision Probes of a Leptophobic Z' Boson

TL;DR

This paper shows how precision parity-violating deep inelastic scattering experiments can indirectly detect leptophobic Z' bosons with axial quark couplings, exploring new parameter space and testing models related to collider anomalies.

Contribution

It introduces a novel indirect method using parity-violating deep inelastic scattering to probe leptophobic Z' bosons with masses above 100 GeV.

Findings

Planned measurements can test previously unexplored parameter space.

The method can probe Z' models explaining collider anomalies.

Sensitive to Z' bosons with axial quark couplings.

Abstract

Extensions of the Standard Model that contain leptophobic Z' gauge bosons are theoretically interesting but difficult to probe directly in high-energy hadron colliders. However, precision measurements of Standard Model neutral current processes can provide powerful indirect tests. We demonstrate that parity-violating deep inelastic scattering of polarized electrons off of deuterium offer a unique probe leptophobic Z' bosons with axial quark couplings and masses above 100 GeV. In addition to covering a wide range of previously uncharted parameter space, planned measurements of the deep inelastic parity-violating eD asymmetry would be capable of testing leptophobic Z' scenarios proposed to explain the CDF W plus di-jet anomaly.