4.7 Article

Projected sensitivities of the LUX-ZEPLIN experiment to new physics via low-energy electron recoils

Journal

PHYSICAL REVIEW D
Volume 104, Issue 9, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.104.092009

Keywords

-

Funding

  1. U.S. Department of Energy, Office of Science, Office of High Energy Physics [DE-AC02-05CH11231, DE-SC0020216, DE-SC0012704, DE-SC0010010, DE-AC0207CH11359, DE-SC0012161, DE-SC0014223, DE-SC0010813, DE-SC0009999, DENA0003180, DE-SC0011702, DESC0010072, DE-SC0015708]
  2. U.S. National Science Foundation (NSF)
  3. United Kingdom Science and Technology Facilities Council [ST/M003655/1, ST/M003981/1, ST/M003744/1, ST/M003639/1, ST/M003604/1, ST/R003181/1, ST/M003469/1, ST/S000739/1, ST/S000666/1, ST/S000828/1, ST/S000879/1, ST/S000933/1, ST/S000747/1, ST/S000801/1]
  4. Portuguese Foundation for Science and Technology (FCT) [PTDC/FIS-PAR/28567/2017]
  5. Institute for Basic Science, Korea [IBS-R016-D1]
  6. STFC Boulby Underground Laboratory in the United Kingdom
  7. IRIS Consortium
  8. University College London Cosmoparticle Initiative
  9. Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231]
  10. The U.S. Department of Energy, Office of Science, Office of High Energy Physics [DE-SC0006605, DESC0008475, DE-FG02-10ER46709, DE-SC0013542, DE-AC0276SF00515, DE-SC0018982, DE-SC0019066, DE-SC0015535, DE-SC0019193, DE-AC5207NA27344, DOE-SC0012447, UW PRJ82AJ]
  11. Science and Technology Facilities Council [ST/S000879/1] Funding Source: researchfish
  12. Fundação para a Ciência e a Tecnologia [PTDC/FIS-PAR/28567/2017] Funding Source: FCT
  13. U.S. Department of Energy (DOE) [DE-SC0020216, DE-SC0019193, DE-SC0019066, DE-SC0018982, DE-SC0015708, DE-SC0012161, DE-SC0013542, DE-SC0014223] Funding Source: U.S. Department of Energy (DOE)

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LUX-ZEPLIN, a dark matter detector, is expected to have world-leading sensitivity to various low-energy signals due to its large exposure and low background interference rate.
LUX-ZEPLIN is a dark matter detector expected to obtain world-leading sensitivity to weakly interacting massive particles interacting via nuclear recoils with a similar to 7-tonne xenon target mass. This paper presents sensitivity projections to several low-energy signals of the complementary electron recoil signal type: 1) an effective neutrino magnetic moment, and 2) an effective neutrino millicharge, both for pp-chain solar neutrinos, 3) an axion flux generated by the Sun, 4) axionlike particles forming the Galactic dark matter, 5) hidden photons, 6) mirror dark matter, and 7) leptophilic dark matter. World-leading sensitivities are expected in each case, a result of the large 5.6 t 1000 d exposure and low expected rate of electron-recoil backgrounds in the < 100 keV energy regime. A consistent signal generation, background model and profile-likelihood analysis framework is used throughout.

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