Demonstration of deuterium's enhanced sensitivity to symmetry violations governed by the Standard-Model Extension

Abstract

We have performed hyperfine spectroscopy of two transitions in ground-state deuterium and searched for violations of CPT and Lorentz symmetry that would manifest as sidereal variations of the observed transition frequencies. Several nonrelativistic proton coefficients of the Standard-Model Extension framework have been addressed. The spin-independent coefficients with momentum power k=2,4 are constrained for the first time. Bounds on spin-dependent coefficients are improved by exploiting a sensitivity enhancement originating from the relative momenta of the nucleons in the deuteron. The best previous constraints by hydrogen maser measurements are surpassed by 4 and 14 orders of magnitude for coefficients with k=2 and 4, respectively.

Main-Text/End-Matter/Supplemental-Material: 7/2/7 pages, 4/3/3 figures, 2/2/5 tables, 6/2/2 sets of equations

References in corpus (13)

• The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package
• Electrodynamics with Lorentz-violating operators of arbitrary dimension
• Assessing statistical significance of periodogram peaks
• Frequency Selective Surfaces for High Sensitivity Terahertz Sensing
• Penning-trap mass measurements of the deuteron and the HD+ molecular ion
• Improved bounds on Lorentz violation from composite-pulse Ramsey spectroscopy in a trapped ion
• Precision determination of the dpi -> NN transition strength at threshold
• Deuterium spectroscopy for enhanced bounds on physics beyond the Standard Model
• A hydrogen beam to characterize the ASACUSA antihydrogen hyperfine spectrometer
• GRASIAN: Towards the first demonstration of gravitational quantum states of atoms with a cryogenic hydrogen beam
• CPT and Lorentz symmetry tests with hydrogen using a novel in-beam hyperfine spectroscopy method applicable to antihydrogen experiments
• GRASIAN: Shaping and characterization of the cold hydrogen and deuterium beams for the forthcoming first demonstration of gravitational quantum states of atoms
• Prospects for testing CPT and Lorentz symmetry with deuterium ground-state Zeeman-hyperfine transitions