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First Constraints on WIMP-Nucleon Effective Field Theory Couplings in an Extended Energy Region From LUX-ZEPLIN
- Source :
- Phys. Rev. D 109, 092003 (2024)
- Publication Year :
- 2023
-
Abstract
- Following the first science results of the LUX-ZEPLIN (LZ) experiment, a dual-phase xenon time projection chamber operating from the Sanford Underground Research Facility in Lead, South Dakota, USA, we report the initial limits on a model-independent non-relativistic effective field theory describing the complete set of possible interactions of a weakly interacting massive particle (WIMP) with a nucleon. These results utilize the same 5.5 t fiducial mass and 60 live days of exposure collected for the LZ spin-independent and spin-dependent analyses while extending the upper limit of the energy region of interest by a factor of 7.5 to 270 keVnr. No significant excess in this high energy region is observed. Using a profile-likelihood ratio analysis, we report 90% confidence level exclusion limits on the coupling of each individual non-relativistic WIMP-nucleon operator for both elastic and inelastic interactions in the isoscalar and isovector bases.<br />Comment: 17 pages 11 figures
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. D 109, 092003 (2024)
- Publication Type :
- Report
- Accession number :
- edsarx.2312.02030
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevD.109.092003