Constraints on Lorentz violation parameter through electric dipole moments

Sarah Aghababaei

doi:10.1140/epjc/s10052-024-12531-0

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2024 Impact factor 4.8

Particles and Fields

Open Access

Eur. Phys. J. C (2024) 84: 173
https://doi.org/10.1140/epjc/s10052-024-12531-0

Regular Article - Theoretical Physics

Constraints on Lorentz violation parameter through electric dipole moments

Sarah Aghababaei^a

Department of Physics, Faculty of Sciences, Yasouj University, 75918-74934, Yasouj, Iran

^a sarah.aghababaei@gmail.com

Received: 23 November 2023
Accepted: 7 February 2024
Published online: 19 February 2024

Abstract

The electric dipole moments of leptons (l-EDMs) could arise from the electrodynamics part of standard model extension (SME). In this work, we investigate the cross section of electron-positron collision in the Lorentz violation (LV) background via the l-EDMs. We find that the Lorentz violation parameter magnitudes constraint using LEP data to the level of $| d_{LV}^{e} | < 3.6 \times 10^{- 17}$ $|d^{e}_{LV}| < 3.6 \times 10^{-17}$ , $| d_{LV}^{μ} | < 9.5 \times 10^{- 10}$ $|d^{\mu }_{LV}|< 9.5 \times 10^{-10}$ , and $| d_{LV}^{τ} | < 1.5 \times 10^{- 6}$ $|d^{\tau }_{LV}|< 1.5 \times 10^{-6}$ for electron, muon, and tau, respectively. Moreover, we show the time-location dependence of muon-EDMs and tau-EDMs in the LV background. Therefore, upper bounds for combinations of LV parameters are obtained by current and future terrestrial experiments.

© The Author(s) 2024

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