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LUX likelihood and limits on spin-independent and spin-dependent WIMP couplings with LUXCalc
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA. University of Utah, United States.
2015 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 92, no 10, 103519Article in journal (Refereed) Published
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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
American Physical Society , 2015. Vol. 92, no 10, 103519
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-180130DOI: 10.1103/PhysRevD.92.103519ISI: 000365512100004Scopus ID: 2-s2.0-84948845960OAI: oai:DiVA.org:kth-180130DiVA: diva2:894055
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QC 20160114

Available from: 2016-01-14 Created: 2016-01-07 Last updated: 2016-01-14Bibliographically approved

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