Search for effective Lorentz and CPT violation using ZEUS data

Abt, I. and Aggarwal, R. and Aushev, V. and Behnke, O. and Bertolin, A. and Bloch, I. and Brock, I. and Brook, N. H. and Brugnera, R. and Bruni, A. and Bussey, P. J. and Caldwell, A. and Catterall, C. D. and Chwastowski, J. and Ciborowski, J. and Ciesielski, R. and Cooper-Sarkar, A. M. and Corradi, M. and Dementiev, R. K. and Dusini, S. and Ferrando, J. and Foster, B. and Gallo, E. and Gangadharan, D. and Garfagnini, A. and Geiser, A. and Grzelak, G. and Gwenlan, C. and Hochman, D. and Jomhari, N. Z. and Kadenko, I. and Karshon, U. and Kaur, P. and Klanner, R. and Korzhavina, I. A. and Kovalchuk, N. and Kuze, M. and Levchenko, B. B. and Levy, A. and Loehr, B. and Longhin, A. and Lorkowski, F. and Lunghi, E. and Makarenko, I. and Malka, J. and Masciocchi, S. and Nagano, K. and Nam, J. D. and Onishchuk, Yu. and Paul, E. and Pidhurskyi, I. and Polini, A. and Przybycien, M. and Quintero, A. and Ruspa, M. and Schneekloth, U. and Schoerner-Sadenius, T. and Selyuzhenkov, I. and Shchedrolosiev, M. and Shcheglova, L. M. and Sherrill, N. and Skillicorn, I. O. and Slominski, W. and Solano, A. and Stanco, L. and Stefaniuk, N. and Surrow, B. and Tokushuku, K. and Turkot, O. and Tymieniecka, T. and Verbytskyi, A. and Abdullah, W. A. T. Wan and Wichmann, K. and Wing, M. and Yamada, S. and Yamazaki, Y. and Zarnecki, A. F. and Zenaiev, O. and Collaboration, ZEUS (2023) Search for effective Lorentz and CPT violation using ZEUS data. Physical Review D, 107 (9). ISSN 2470-0010, DOI https://doi.org/10.1103/PhysRevD.107.092008.

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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.

Item Type: Article
Funders: UNSPECIFIED
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Universiti Malaya
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 01 Oct 2025 02:37
Last Modified: 01 Oct 2025 02:37
URI: http://eprints.um.edu.my/id/eprint/50307

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