Search for effective Lorentz and CPT violation using ZEUS data
Document Type
Article
Publication Date
5-1-2023
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 ffis ffi V = 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.
Divisions
universiti
Publication Title
Physical Review D
Volume
107
Issue
9
Publisher
American Physical Society
Publisher Location
ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA