DOE OSTI · 3015191
First Constraint on Atmospheric Millicharged Particles with the LUX-ZEPLIN Experiment
Abstract
We report on a search for millicharged particles (mCPs) produced in cosmic ray atmospheric interactions using data collected during the first science run of the LUX-ZEPLIN experiment. The mCPs produced by two processes—meson decay and proton bremsstrahlung—are considered in this study. This search utilized a novel signature unique to liquid xenon (LXe) time projection chambers, allowing sensitivity to mCPs with masses ranging from 10 to 1000 MeV/c 2 and fractional charges between 0.001 and 0.02 of the electron charge (𝑒). With an exposure of 60 live days and a 5.5 metric ton fiducial mass, we observed no significant excess over background. This represents the first experimental search for atmospheric mCPs and the first search for mCPs using an underground LXe experiment.
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Aalbers, J. [SLAC National Accelerator Laboratory; Stanford University], Akerib, D. S. [SLAC National Accelerator Laboratory; Stanford University], Musalhi, A. K. Al [University College London (UCL)], Alder, F. [University College London (UCL)], Amarasinghe, C. S. [University of California], Ames, A. [SLAC National Accelerator Laboratory; Stanford University], Anderson, T. J. [SLAC National Accelerator Laboratory; Stanford University], Angelides, N. [Imperial College London], Araújo, H. M. [Imperial College London], Armstrong, J. E. [University of Maryland], Arthurs, M. [SLAC National Accelerator Laboratory; Stanford University], Baker, A. [King’s College London], Balashov, S. [STFC Rutherford Appleton Laboratory (RAL)], Bang, J. [Brown University], Bargemann, J. W. [University of California], Barillier, E. E. [University of Michigan; University of Zürich], Bauer, D. [Imperial College London], Beattie, K. [Lawrence Berkeley National Laboratory], Benson, T. [University of Wisconsin-Madison], Bhatti, A. [University of Maryland], Biekert, A. [Lawrence Berkeley National Laboratory; University of California], Biesiadzinski, T. P. [SLAC National Accelerator Laboratory; Stanford University], Birch, H. J. [University of Michigan; University of Zürich], Bishop, E. [University of Edinburgh], Blockinger, G. M. [University at Albany (SUNY)], Boxer, B. [University of California], Brew, C. A. J. [STFC Rutherford Appleton Laboratory (RAL)], Brás, P. [University of Coimbra], Burdin, S. [University of Liverpool], Buuck, M. [SLAC National Accelerator Laboratory; Stanford University], Carmona-Benitez, M. C. [Pennsylvania State University], Carter, M. [University of Liverpool], Chawla, A. [University of London], Chen, H. [Lawrence Berkeley National Laboratory], Cherwinka, J. J. [University of Wisconsin-Madison], Chin, Y. T. [Pennsylvania State University], Chott, N. I. [South Dakota School of Mines and Technology], Converse, M. V. [University of Rochester], Coronel, R. [SLAC National Accelerator Laboratory; Stanford University], Cottle, A. [University College London (UCL)], Cox, G. [South Dakota Science and Technology Authority (SDSTA)], Curran, D. [South Dakota Science and Technology Authority (SDSTA)], Dahl, C. E. [Northwestern University; Fermi National Accelerator Laboratory (FNAL)], Darlington, I. [University College London (UCL)], Dave, S. [University College London (UCL)], David, A. [University College London (UCL)], Delgaudio, J. [South Dakota Science and Technology Authority (SDSTA)], Dey, S. [University of Oxford], de Viveiros, L. [Pennsylvania State University], Di Felice, L. [Imperial College London], Ding, C. [Brown University], Dobson, J. E. Y. [King’s College London], Druszkiewicz, E. [University of Rochester], Dubey, S. [Brown University], Eriksen, S. R. [University of Bristol], Fan, A. [SLAC National Accelerator Laboratory; Stanford University], Fayer, S. [Imperial College London], Fearon, N. M. [University of Oxford], Fieldhouse, N. [University of Oxford], Fiorucci, S. [Lawrence Berkeley National Laboratory], Flaecher, H. [University of Bristol], Fraser, E. D. [University of Liverpool], Fruth, T. M. A. [The University of Sydney], Gaitskell, R. J. [Brown University], Geffre, A. [South Dakota Science and Technology Authority (SDSTA)], Genovesi, J. [Pennsylvania State University; South Dakota School of Mines and Technology], Ghag, C. [University College London (UCL)], Ghosh, A. [University at Albany (SUNY)], Gibbons, R. [Lawrence Berkeley National Laboratory; University of California], Gokhale, S. [Brookhaven National Laboratory], Green, J. [University of Oxford], van der Grinten, M. G. D. [STFC Rutherford Appleton Laboratory (RAL)], Haiston, J. J. [South Dakota School of Mines and Technology], Hall, C. R. [University of Maryland], Hall, T. J. [University of Liverpool], Han, S. [SLAC National Accelerator Laboratory; Stanford University], Hartigan-O’Connor, E. [Brown University], Haselschwardt, S. J. [University of Michigan], Hernandez, M. A. [University of Michigan; University of Zürich], Hertel, S. A. [University of Massachusetts], Heuermann, G. [University of Michigan], Homenides, G. J. [University of Alabama], Horn, M. [South Dakota Science and Technology Authority (SDSTA)], Huang, D. Q. [University of California, Los Angeles], Hunt, D. [University of Oxford], Jacquet, E. [Imperial College London], James, R. S. [University College London (UCL)], Johnson, J. [University of California], Kaboth, A. C. [University of London], Kamaha, A. C. [University of California, Los Angeles], Kannichankandy, M. [University at Albany (SUNY)], Khaitan, D. [University of Rochester], Khazov, A. [STFC Rutherford Appleton Laboratory (RAL)], Khurana, I. [University College London (UCL)], Kim, J. [University of California], Kim, Y. D. [IBS Center for Underground Physics (CUP)], Kingston, J. [University of California], Kirk, R. [Brown University], Kodroff, D. [Lawrence Berkeley National Laboratory], Korley, L. [University of Michigan]. 2025-06-18. First Constraint on Atmospheric Millicharged Particles with the LUX-ZEPLIN Experiment. https://doi.org/10.1103/zhs9-65ds
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