| Home > Publications database > Search for effective Lorentz and $CPT$ violation using ZEUS data |
| Journal Article | PUBDB-2023-03659 |
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2023
Inst.
Woodbury, NY
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Please use a persistent id in citations: doi:10.1103/PhysRevD.107.092008 doi:10.3204/PUBDB-2023-03659
Report No.: DESY-22-210; arXiv:2212.12750
Abstract: Lorentz and $CPT$ symmetry in the quark sector of the Standard Model are studied in the context of an effective field theory using ZEUS $e^± p$ data. Symmetry-violating effects can lead to time-dependent oscillations of otherwise time-independent observables, including scattering cross sections. An analysis using five years of inclusive neutral-current deep inelastic scattering events corresponding to an integrated HERA luminosity of $372$ $pb^{−1}$ at $\sqrt{s}$ $= 318$ $GeV$ has been performed. No evidence for oscillations in sidereal time has been observed within statistical and systematic uncertainties. Constraints, most for the first time, are placed on 42 coefficients parametrizing dominant $CPT$-even dimension-four and $CPT$-odd dimension-five spin-independent modifications to the propagation and interaction of light quarks.
Keyword(s): electron p: deep inelastic scattering ; positron p: deep inelastic scattering ; CPT: violation ; deep inelastic scattering: neutral current ; oscillation ; ZEUS ; violation: Lorentz ; time dependence ; propagation ; error: statistical ; effective field theory ; DESY HERA Stor ; experimental results ; 318 GeV-cms
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Search for effective Lorentz and CPT violation using ZEUS data
[10.3204/PUBDB-2022-07861]
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