Measurements and models of enhanced recombination following inner-shell vacancies in liquid xenon

Electron-capture decays of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mrow> <a:mmultiscripts> <a:mrow> <a:mi>Xe</a:mi> </a:mrow> <a:mprescripts/> <a:none/> <a:mrow> <a:mn>125</a:mn> </a:mrow> </a:mmultiscripts> </a:mrow> </a:math> and <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"> <c:mrow> <c:mmultiscripts> <c:mrow> <c:mi>Xe</c:mi> </c:mrow> <c:mprescripts/> <c:none/> <c:mrow> <c:mn>127</c:mn> </c:mrow> </c:mmultiscripts> </c:mrow> </c:math> , and double-electron-capture decays of <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"> <e:mrow> <e:mmultiscripts> <e:mrow> <e:mi>Xe</e:mi> </e:mrow> <e:mprescripts/> <e:none/> <e:mrow> <e:mn>124</e:mn> </e:mrow> </e:mmultiscripts> </e:mrow> </e:math> , are backgrounds in searches for weakly interacting massive particles (WIMPs) conducted by dual-phase xenon time projection chambers such as LUX-ZEPLIN (LZ). These decays produce signals with more light and less charge than equivalent-energy <g:math xmlns:g="http://www.w3.org/1998/Math/MathML" display="inline"> <g:mi>β</g:mi> </g:math> decays and correspondingly overlap more with WIMP signals. We measure three electron-capture charge yields in LZ: the 1.1 keV M-shell, 5.2 keV L-shell, and 33.2 keV K-shell at drift fields of 193 and <i:math xmlns:i="http://www.w3.org/1998/Math/MathML" display="inline"> <i:mrow> <i:mn>96.5</i:mn> <i:mtext> </i:mtext> <i:mtext> </i:mtext> <i:mi mathvariant="normal">V</i:mi> <i:mo>/</i:mo> <i:mi>cm</i:mi> </i:mrow> </i:math> . The LL double-electron-capture decay of <l:math xmlns:l="http://www.w3.org/1998/Math/MathML" display="inline"> <l:mrow> <l:mmultiscripts> <l:mrow> <l:mi>Xe</l:mi> </l:mrow> <l:mprescripts/> <l:none/> <l:mrow> <l:mn>124</l:mn> </l:mrow> </l:mmultiscripts> </l:mrow> </l:math> exhibits even more pronounced shifts in charge and light. We provide a first model of double-electron-capture charge yields using the link between ionization density and electron-ion recombination, and identify a need for more accurate calculations. Finally, we discuss the implications of the reduced charge yield of these decays and other interactions creating inner-shell vacancies for future dark matter searches.

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Journal
Physical review. D/Physical review. D.
Published
2025-05-19
DOI
https://doi.org/10.1103/447w-94h3
Citations
2
Primary Topic
Atomic and Subatomic Physics Research
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article
Field-Weighted Citation Impact
2.49

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article

Measurements and models of enhanced recombination following inner-shell vacancies in liquid xenon

L. Kreczko, J. W. Bargemann, M. Yeh, K. J. Palladino et al.
2 citations
Physical review. D/Physical review. D.
Atomic and Subatomic Physics Research
2.49
article

Measurements and models of enhanced recombination following inner-shell vacancies in liquid xenon

L. Kreczko, J. W. Bargemann, M. Yeh, K. J. Palladino, R. L. Kirk, C. E. Dahl, V. Velan, D. S. Akerib, S. Burdin, D. Q. Huang, E. Hartigan-O’Connor, A. K. Al Musalhi, Tyler Anderson, W. Zha, C. A. J. Brew, R. Gibbons, F. Alder, H. J. Birch, S. Shaw, Z. Tong, V. N. Solovov, E. D. Fraser, C. Levy, R. L. Mannino, D. R. Tovey, P. Sorensen, D. Yeum, C. J. Wright, T. P. Biesiadzinski, M. E. McCarthy, M. Arthurs, B. J. Mount, E. Morrison, L. Korley, T. Rushton, D. Khaitan, E. Jacquet, J. Orpwood, V. Kudryavtsev, David Woodward, N. Fieldhouse, Jing Xu, John M. DelGaudio, D. Hunt, M.A. Hernández, D. Santone, M. Murdy, C. Hall, M. Szydagis, Graham McDowell, J. Reichenbacher, J. Genovesi, Anthony C. Swain, J. E. Y. Dobson, E. Mizrachi, I. Olcina, E. Druszkiewicz, J. J. Haiston, F. L. H. Wolfs, B. Suerfu, H. Flaecher, A. Cottle, B. Boxer, C. A. Rhyne, M. C. Carmona-Benitez, M. Trask, R. W. Schnee, E. Bishop, A. Biekert, E. Perry, Ruben Coronel, K. Wild, L. de Viveiros, S. Gokhale, J. Tranter, S. Balashov, R. S. James, Alexander A. Baker, S. Fiorucci, I. Lopes, J. McLaughlin, M. Williams, D. Rynders, Huaqiao Zhang, D. Kodroff, K. T. Lesko, Levi John Wolf, Q. Xia, D. N. McKinsey, J. Palmer, D. S. Leonard, Jaebak Kim, R. Rosero, N. Angelides, H. S. Riyat, J. Green, G. Pereira, K. Beattie, A. Stevens, Edwin L. Ritchey, M. Pyle, J. J. Wang, A. Kamaha, T. Hall, C. Silva, W. Matava, M. Timalsina, G. R. C. Rischbieter, N. Parveen, A. D. Nguyen, T. Pershing, F. Neves, G. M. Blockinger, A. Bhatti, Theophilus Benson, M. V. Converse, S. Woodford, A. Piepke, T. Fruth, S. A. Hertel, C. S. Amarasinghe, A. B. M. R. Sazzad, A. C. Vaitkus, H. N. Nelson, Y. D. Kim, Y. Qie, H. M. Araújo, N. M. Fearon, A. Geffre, M. E. Monzani, K. C. Oliver-Mallory, P. Brás, S. J. Haselschwardt, A. Manalaysay, M. Tripathi, A. Lindote, C. Maupin, M. Horn, I. Stancu, A. Chawla, H. Chen, S. Dubey, T. J. Whitis, R. Smith, A. St. J. Murphy, S. R. Eriksen, Sandeep S. Davé, M. Buuck, C. Ghag, T. J. Sumner, Jennifer Kingston, W. Lorenzon, W. H. Lippincott, A. Ames, L. Weeldreyer, N. J. Pannifer, G. J. Homenides, R. McMonigle, E. E. Barillier, J. Siniscalco, O. Valentino, L. Di Felice, M. Kannichankandy, Andrew Wang, Ding Chen, Michael Carter, J. Soria, Sourav Dey, E. V. Korolkova, C. L. O’Brien, K. Shi, N. Chott, K. Y. Oyulmaz, J. J. Silk, G. Sehr, J. J. Cherwinka, H. Kraus, W. J. Wisniewski, C. Lu, S. Han, S. Kravitz, K. Stifter, A. C. Kaboth, A. David, S. Patton, J. B. McLaughlin, T. Shutt, J. E. Armstrong, R. J. Gaitskell, J. R. Watson, P. A. Majewski, D. R. Tiedt, G. A. Cox, M. G. D. van der Grinten, Y. T. Chin, A. Khazov, J. Bang, D. Curran, S. Luitz, B.D. Shafer, G. Heuermann, A. Fan, A. Usón, C. Lawes, I. Darlington, Y. Xu, Y. Wang, Karl J. Friston
article en
2 citations

Abstract

Electron-capture decays of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mrow> <a:mmultiscripts> <a:mrow> <a:mi>Xe</a:mi> </a:mrow> <a:mprescripts/> <a:none/> <a:mrow> <a:mn>125</a:mn> </a:mrow> </a:mmultiscripts> </a:mrow> </a:math> and <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"> <c:mrow> <c:mmultiscripts> <c:mrow> <c:mi>Xe</c:mi> </c:mrow> <c:mprescripts/> <c:none/> <c:mrow> <c:mn>127</c:mn> </c:mrow> </c:mmultiscripts> </c:mrow> </c:math> , and double-electron-capture decays of <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"> <e:mrow> <e:mmultiscripts> <e:mrow> <e:mi>Xe</e:mi> </e:mrow> <e:mprescripts/> <e:none/> <e:mrow> <e:mn>124</e:mn> </e:mrow> </e:mmultiscripts> </e:mrow> </e:math> , are backgrounds in searches for weakly interacting massive particles (WIMPs) conducted by dual-phase xenon time projection chambers such as LUX-ZEPLIN (LZ). These decays produce signals with more light and less charge than equivalent-energy <g:math xmlns:g="http://www.w3.org/1998/Math/MathML" display="inline"> <g:mi>β</g:mi> </g:math> decays and correspondingly overlap more with WIMP signals. We measure three electron-capture charge yields in LZ: the 1.1 keV M-shell, 5.2 keV L-shell, and 33.2 keV K-shell at drift fields of 193 and <i:math xmlns:i="http://www.w3.org/1998/Math/MathML" display="inline"> <i:mrow> <i:mn>96.5</i:mn> <i:mtext> </i:mtext> <i:mtext> </i:mtext> <i:mi mathvariant="normal">V</i:mi> <i:mo>/</i:mo> <i:mi>cm</i:mi> </i:mrow> </i:math> . The LL double-electron-capture decay of <l:math xmlns:l="http://www.w3.org/1998/Math/MathML" display="inline"> <l:mrow> <l:mmultiscripts> <l:mrow> <l:mi>Xe</l:mi> </l:mrow> <l:mprescripts/> <l:none/> <l:mrow> <l:mn>124</l:mn> </l:mrow> </l:mmultiscripts> </l:mrow> </l:math> exhibits even more pronounced shifts in charge and light. We provide a first model of double-electron-capture charge yields using the link between ionization density and electron-ion recombination, and identify a need for more accurate calculations. Finally, we discuss the implications of the reduced charge yield of these decays and other interactions creating inner-shell vacancies for future dark matter searches.

Physical review. D/Physical review. D.Vol. 112(1)
Lawrence Livermore National Laboratory (US), Rutherford Appleton Laboratory (GB), The University of Sydney (AU), Pennsylvania State University (US), Fermi National Accelerator Laboratory (US), University of Wisconsin–Madison (US), University of Liverpool (GB), Lawrence Berkeley National Laboratory (US), University of California, Santa Barbara (US), University of Alabama (US), John Brown University (US), King's College London (GB), South Dakota School of Mines and Technology (US), Brookhaven National Laboratory (US), University of Zurich (CH), University of Michigan (US), LIP - Laboratory of Instrumentation and Experimental Particle Physics (PT), Vatican Secret Archives (VA), SLAC National Accelerator Laboratory (US), University of California System (US), University of Bristol (GB), University at Albany, State University of New York (US), University of Oxford (GB), Universidad de Londres (MX), South Dakota Science and Technology Authority (US), University College London (GB), Imperial College London (GB), University of Rochester (US), University of Maryland, College Park (US), Black Hills State University (US), The University of Texas at Austin (US), University of Sheffield (GB), Stanford University (US), University of Edinburgh (GB)
National Science Foundation, U.S. Department of Energy, Brown University, Brasenose College, University of Oxford, UK Research and Innovation, Australian Government, National Energy Research Scientific Computing Center, Imperial College London, University College London, University of Edinburgh, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Universität Zürich, Institute for Basic Science, Office of Science, Science and Technology Facilities Council, Fundação para a Ciência e a Tecnologia, High Energy Physics
Openalex Percentile: Top 12%
Atomic and Subatomic Physics Research
2.49
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