Search for effective Lorentz and CPT violation using ZEUS data

Autor: Abt, Iris, Aggarwal, R., Aushev, Vladimir, Behnke, O., Bertolin, Alessandro, Bloch, I., Brock, Ian, Brook, Nick, Brugnera, Riccardo, Bruni, Alessia, Bussey, Peter, Caldwell, Allen, Catterall, Corinna, Chwastowski, Janusz, Ciborowski, Jacek, Ciesielski, Robert, Cooper-Sarkar, Amanda, Corradi, Massimo, Dementiev, R. K., Dusini, S., Ferrando, James, Foster, Brian, Gallo, E., Gangadharan, D., Garfagnini, Alberto, Geiser, A., Grzelak, Grzegorz, Gwenlan, Claire, Hochman, Don, Jomhari, N. Z., Kadenko, I., Karshon, U., Kaur, P., Klanner, R., Korzhavina, I. A., Kovalchuk, N., Kuze, Masahiro, Levchenko, B. B., Levy, Aharon, Löhr, B., Lohrmann, E., Longhin, Andrea, Lorkowski, Florian, Lunghi, E., Makarenko, I., Malka, J., Masciocchi, S., Nagano, Kunihiro, Nam, J. D., Onishchuk, Yu., Paul, Ewald, Pidhurskyi, I., Polini, Alessandro, Przybycien, Mariusz, Quintero, A., Ruspa, Marta, Schneekloth, U., Schörner-Sadenius, T., Selyuzhenkov, I., Shchedrolosiev, Mykyta, Shcheglova, L. M., Sherrill, N., Skillicorn, Ian, Słomiński, W., Solano, Ada, Stanco, Luca, Stefaniuk, Nazar, Surrow, B., Tokushuku, Katsuo, Turkot, Oleksii, Tymieniecka, Teresa, Verbytskyi, A., Abdullah, W. A. T. Wan, Wichmann, Katarzyna, Wing, Matthew, Yamada, Sakue, Yamazaki, Yuji, Zarnecki, Aleksander Filip, Zenaiev, O., ZEUS Collaboration
Jazyk: angličtina
Rok vydání: 2022
Předmět:
High Energy Physics - Theory
electron p: deep inelastic scattering
neutral current [deep inelastic scattering]
FOS: Physical sciences
CPT: violation
High Energy Physics - Experiment
quark
High Energy Physics - Experiment (hep-ex)
High Energy Physics - Phenomenology (hep-ph)
effective field theory
propagation
ddc:530
deep inelastic scattering [positron p]
318 GeV-cms
deep inelastic scattering
neutral current

Lorentz [violation]
positron p: deep inelastic scattering
scattering
ZEUS
statistical [error]
oscillation
deep inelastic scattering: neutral current
violation: Lorentz
High Energy Physics - Phenomenology
error: statistical
DESY HERA Stor
High Energy Physics - Theory (hep-th)
violation [CPT]
deep inelastic scattering [electron p]
time dependence
CPT
violation

statistical
Lorentz
experimental results
Zdroj: Physical review / D 107(9), 092008 (2023). doi:10.1103/PhysRevD.107.092008
DOI: 10.3204/PUBDB-2022-07861
Popis: Physical review / D 107(9), 092008 (2023). doi:10.1103/PhysRevD.107.092008
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.
Published by Inst., Woodbury, NY
Databáze: OpenAIRE