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Can LIGO Detect Nonannihilating Dark Matter?

Bhattacharya, S. and Dasgupta, B. and Laha, R. and Ray, A. (2023) Can LIGO Detect Nonannihilating Dark Matter? In: Physical review letters, 131 (9). 091401.

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Official URL: https://doi.org/10.1103/PhysRevLett.131.091401


Dark matter (DM) from the galactic halo can accumulate in neutron stars and transmute them into sub-2.5M⊙ black holes if the dark matter particles are heavy, stable, and have interactions with nucleons. We show that nondetection of gravitational waves from mergers of such low-mass black holes can constrain the interactions of nonannihilating dark matter particles with nucleons. We find benchmark constraints with LIGO O3 data, viz., σχn≥O(10-47) cm2 for bosonic DM with mχ∼PeV (or mχ∼GeV, if they can Bose-condense) and ≥O(10-46) cm2 for fermionic DM with mχ∼103 PeV. These bounds depend on the priors on DM parameters and on the currently uncertain binary neutron star merger rate density. However, with increased exposure by the end of this decade, LIGO will probe cross sections that are many orders of magnitude below the neutrino floor and completely test the dark matter solution to missing pulsars in the Galactic center, demonstrating a windfall science case for gravitational wave detectors as probes of particle dark matter. © 2023 American Physical Society.

Item Type: Journal Article
Publication: Physical review letters
Publisher: NLM (Medline)
Additional Information: The Copyright for this articles belongs to the Authors.
Keywords: article; black hole; neutrino; neutron; nucleon
Department/Centre: Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited: 09 Nov 2023 10:05
Last Modified: 09 Nov 2023 10:05
URI: https://eprints.iisc.ac.in/id/eprint/83318

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