Searching for dark matter with the Th-229 nuclear lineshape from laser spectroscopy

Abstract

The recent laser excitation of the low-lying Th-229 isomer transition is starting a revolution in ultralight dark matter searches. The enhanced sensitivity of this transition to the large class of dark matter models dominantly coupling to quarks and gluons will ultimately allow us to probe coupling strengths eight orders of magnitude smaller than the current bounds from optical atomic clocks, which are mainly sensitive to dark matter couplings to electrons and photons. We argue that, with increasing precision, observations of the Th-229 excitation spectrum will soon give world-leading constraints. Using data from the pioneering laser excitation of Th-229 by Tiedau et al. [Phys. Rev. Lett. 132, 182501 (2024)], we present a first dark matter search in the excitation spectrum. While the exclusion limits of our detailed study of the lineshape are still below the sensitivity of currently operating clock experiments, we project the measurement of Zhang et al. [Nature 663, 63 (2024)] to surpass it.

15 pages, 6 figures, updated version matches version published in PRX

References in corpus (30)

• Test of the Equivalence Principle Using a Rotating Torsion Balance
• Discovering the QCD Axion with Black Holes and Gravitational Waves
• Searching for dilaton dark matter with atomic clocks
• Wave Dark Matter
• Milky Way Satellite Census. III. Constraints on Dark Matter Properties from Observations of Milky Way Satellite Galaxies
• Equivalence Principle Violations and Couplings of a Light Dilaton
• Enhanced effect of temporal variation of the fine structure constant in diatomic molecules
• Short-range tests of the equivalence principle
• Precision Metrology Meets Cosmology: Improved Constraints on Ultralight Dark Matter from Atom-Cavity Frequency Comparisons
• MICROSCOPE mission: final results of the test of the Equivalence Principle
• Frequency ratio of the ${}^{229\mathrm{m}}$Th nuclear isomeric transition and the ${}^{87}$Sr atomic clock
• Search for axion-like dark matter through nuclear spin precession in electric and magnetic fields
• Observation of the radiative decay of the ${}^{229}\mathrm{Th}$ nuclear clock isomer
• Performance of a 229 Thorium solid-state nuclear clock
• Phenomenology of the Equivalence Principle with Light Scalars
• Search for ultralight dark matter from long-term frequency comparisons of optical and microwave atomic clocks
• Searching for Scalar Dark Matter via Coupling to Fundamental Constants with Photonic, Atomic and Mechanical Oscillators
• Search for oscillations of fundamental constants using molecular spectroscopy
• The Phenomenology of Quadratically Coupled Ultra Light Dark Matter
• Search for ultralight dark matter with spectroscopy of radio-frequency atomic transitions
• Gravitational Focusing of Wave Dark Matter
• New Limit on Axion-Like Dark Matter using Cold Neutrons
• Astronomical and laboratory searches for space-time variation of fundamental constants
• Probing an ultralight QCD axion with electromagnetic quadratic interaction
• Coulomb energy contribution to the excitation energy in ${}^{229}$Th and enhanced effect of $\alpha$ variation
• Impact of axions on the Cassiopea A neutron star cooling
• Intensity interferometry for ultralight bosonic dark matter detection
• Relaxion Dark Matter from Stochastic Misalignment
• Prospects of nuclear-coupled-dark-matter detection via correlation spectroscopy of I${}_2^{+}$ and Ca${}^{+}$
• Nelson-Barr ultralight dark matter

Cited by in corpus (4)

• On the sensitivity of nuclear clocks to new physics
• Quantum Sensing Using Atomic Clocks for Nuclear and Particle Physics
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