Constraining Dimension-Six Nonminimal Lorentz-Violating Electron--Nucleon Interactions with EDM Physics [CPT'19]

2019/07/24 by Jonas B. Araujo, Araujo, Jonas B., A. Blin +5
Physics and Astronomy · #Noncommutative and Quantum Gravity Theories #Quantum and Classical Electrodynamics #Particle physics theoretical and experimental studies

paper · pdf · doi:10.48550/arxiv.1907.10538

Abstract

Electric dipole moments of atoms can arise from P-odd and T-odd electron--nucleon couplings. This work studies a general class of dimension-six electron--nucleon interactions mediated by Lorentz-violating tensors of ranks ranging from 1 to 4. The possible couplings are listed as well as their behavior under C, P, and T, allowing us to select the couplings compatible with electric-dipole-moment physics. The unsuppressed contributions of these couplings to the atom's hamiltonian can be read as equivalent to an electric dipole moment. The Lorentz-violating coefficients' magnitudes are limited using electric-dipole-moment measurements at the levels of 3.2×10^-31(eV)^-2 or 1.6×10^-33(eV)^-2.

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