Aalbers, J., Akerib, D.S., Al Musalhi, A.K. et al. (206 more authors) (2024) New constraints on ultraheavy dark matter from the LZ experiment. Physical Review D, 109. 112010. ISSN 2470-0010
Abstract
<jats:p>Searches for dark matter with liquid xenon time projection chamber experiments have traditionally focused on the region of the parameter space that is characteristic of weakly interacting massive particles, ranging from a few <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mi>GeV</a:mi><a:mo>/</a:mo><a:msup><a:mrow><a:mi>c</a:mi></a:mrow><a:mrow><a:mn>2</a:mn></a:mrow></a:msup></a:mrow></a:math> to a few <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mi>TeV</c:mi><c:mo>/</c:mo><c:msup><c:mi>c</c:mi><c:mn>2</c:mn></c:msup></c:math>. Models of dark matter with a mass much heavier than this are well motivated by early production mechanisms different from the standard thermal freeze-out, but they have generally been less explored experimentally. In this work, we present a reanalysis of the first science run of the LZ experiment, with an exposure of <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mrow><e:mn>0.9</e:mn><e:mtext> </e:mtext><e:mtext> </e:mtext><e:mtext>tonne</e:mtext><e:mo>×</e:mo><e:mi>yr</e:mi></e:mrow></e:math>, to search for ultraheavy particle dark matter. The signal topology consists of multiple energy deposits in the active region of the detector forming a straight line, from which the velocity of the incoming particle can be reconstructed on an event-by-event basis. Zero events with this topology were observed after applying the data selection calibrated on a simulated sample of signal-like events. New experimental constraints are derived, which rule out previously unexplored regions of the dark matter parameter space of spin-independent interactions beyond a mass of <g:math xmlns:g="http://www.w3.org/1998/Math/MathML" display="inline"><g:mrow><g:msup><g:mrow><g:mn>10</g:mn></g:mrow><g:mrow><g:mn>17</g:mn></g:mrow></g:msup><g:mtext> </g:mtext><g:mtext> </g:mtext><g:mi>GeV</g:mi><g:mo>/</g:mo><g:msup><g:mrow><g:mi>c</g:mi></g:mrow><g:mrow><g:mn>2</g:mn></g:mrow></g:msup></g:mrow></g:math>.</jats:p> <jats:sec> <jats:title/> <jats:supplementary-material> <jats:permissions> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2024</jats:copyright-year> </jats:permissions> </jats:supplementary-material> </jats:sec>
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2024 The Authors. This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
Keywords: | 5106 Nuclear and Plasma Physics; 5107 Particle and High Energy Physics; 51 Physical Sciences |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Funding Information: | Funder Grant number SCIENCE AND TECHNOLOGY FACILITIES COUNCIL ST/M003469/1 Science and Technology Facilities Council ST/N000277/1 SCIENCE AND TECHNOLOGY FACILITIES COUNCIL ST/S000747/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 02 Aug 2024 09:57 |
Last Modified: | 02 Aug 2024 09:57 |
Published Version: | http://dx.doi.org/10.1103/physrevd.109.112010 |
Status: | Published |
Publisher: | American Physical Society (APS) |
Refereed: | Yes |
Identification Number: | 10.1103/physrevd.109.112010 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:215549 |