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Breaking of Lorentz Invariance in Electron-Proton Parity Violation

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arxiv 1909.10627 v2 pith:XXLWBLFI submitted 2019-09-23 hep-ph hep-ex

classification hep-phhep-ex
keywords boundslorentzviolationasymmetryelectron-protonextensionfcc-ehmeasurements
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A popular framework for exploring Lorentz violation is the Standard Model Extension. This extension contains a large number of parameters that can be bounded in various experiments. Most studies, however, focus on the fermion or photon sector. Here, we consider Lorentz violation in the weak vector boson sector. The strongest bounds come from measurements of the asymmetry in Moller scattering. We study the bounds that can be obtained from future measurements of the parity violating asymmetry in deep inelastic electron-proton scattering at the EIC, the LHeC and the FCC-eh. For the FCC-eh, the bounds could be substantially improved over current bounds by including timing information.

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  1. Signals of nonrenormalizable Lorentz and CPT violation at the LHC

    hep-ph 2024-12 conditional novelty 6.0 of 10

    New LHC-derived bounds and projected sensitivities are obtained for dimension-five Lorentz- and CPT-violating quark operators through Z-boson exchange in Drell-Yan production.

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