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Proposal for a Ramsey Neutron-Beam Experiment to Search for Ultralight Axion Dark Matter at the European Spallation Source

Fierlinger, P. ; Holl, M. ; Milstead, D. ; Santoro, V. LU ; Snow, W. M. and Stadnik, Y. V. (2024) In Physical Review Letters 133(18).
Abstract

High-intensity neutron beams, such as those available at the European Spallation Source (ESS), provide new opportunities for fundamental discoveries. Here, we discuss a novel Ramsey neutron-beam experiment to search for ultralight axion dark matter through its coupling to neutron spins, which would cause the neutron spins to rotate about the velocity of the neutrons relative to the dark matter halo. We estimate that experiments at the HIBEAM beamline with a 50 m free flight path at the ESS can improve the sensitivity to the axion-neutron coupling compared to the current best laboratory limits by up to 2-3 orders of magnitude over the axion mass range 10-22 eV-10-16 eV.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
133
issue
18
article number
181001
publisher
American Physical Society
external identifiers
  • scopus:85208506775
  • pmid:39547173
ISSN
0031-9007
DOI
10.1103/PhysRevLett.133.181001
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2024 authors. Published by the American Physical Society.
id
8bc694b5-cefc-416c-893a-9282e81b2951
date added to LUP
2025-01-14 14:44:16
date last changed
2025-07-02 04:54:16
@article{8bc694b5-cefc-416c-893a-9282e81b2951,
  abstract     = {{<p>High-intensity neutron beams, such as those available at the European Spallation Source (ESS), provide new opportunities for fundamental discoveries. Here, we discuss a novel Ramsey neutron-beam experiment to search for ultralight axion dark matter through its coupling to neutron spins, which would cause the neutron spins to rotate about the velocity of the neutrons relative to the dark matter halo. We estimate that experiments at the HIBEAM beamline with a 50 m free flight path at the ESS can improve the sensitivity to the axion-neutron coupling compared to the current best laboratory limits by up to 2-3 orders of magnitude over the axion mass range 10-22 eV-10-16 eV.</p>}},
  author       = {{Fierlinger, P. and Holl, M. and Milstead, D. and Santoro, V. and Snow, W. M. and Stadnik, Y. V.}},
  issn         = {{0031-9007}},
  language     = {{eng}},
  month        = {{11}},
  number       = {{18}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Proposal for a Ramsey Neutron-Beam Experiment to Search for Ultralight Axion Dark Matter at the European Spallation Source}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.133.181001}},
  doi          = {{10.1103/PhysRevLett.133.181001}},
  volume       = {{133}},
  year         = {{2024}},
}