LUX likelihood and limits on spin-independent and spin-dependent WIMP couplings with LUXCalc
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
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
IdentifiersURN: urn:nbn:se:su:diva-124742DOI: 10.1103/PhysRevD.92.103519ISI: 000365512100004OAI: oai:DiVA.org:su-124742DiVA: diva2:892411