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LUX likelihood and limits on spin-independent and spin-dependent WIMP couplings with LUXCalc
Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
Number of Authors: 4
2015 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 92, no 10, 103519Article in journal (Refereed) Published
Abstract [en]

We present LUXCalc, a new utility for calculating likelihoods and deriving weakly interacting massive particle (WIMP)-nucleon coupling limits from the recent results of the LUX direct search dark matter experiment. After a brief review of WIMP-nucleon scattering, we derive LUX limits on the spin-dependent WIMP-nucleon couplings over a broad range of WIMP masses, under standard assumptions on the relevant astrophysical parameters. We find that, under these and other common assumptions, LUX excludes the entire spin-dependent parameter space consistent with a dark matter interpretation of DAMA's anomalous signal, the first time a single experiment has been able to do so. We also revisit the case of spin-independent couplings, and demonstrate good agreement between our results and the published LUX results. Finally, we derive constraints on the parameters of an effective dark matter theory in which a spin-1 mediator interacts with a fermionic WIMP and Standard Model fermions via axial-vector couplings. A detailed appendix describes the use of LUXCalc with standard codes to place constraints on generic dark matter theories.

Place, publisher, year, edition, pages
2015. Vol. 92, no 10, 103519
National Category
Physical Sciences
URN: urn:nbn:se:su:diva-124742DOI: 10.1103/PhysRevD.92.103519ISI: 000365512100004OAI: diva2:892411
Available from: 2016-01-10 Created: 2016-01-04 Last updated: 2016-01-10Bibliographically approved

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