XENON10/100 dark matter constraints: examining the Leff dependence

Details XENON10/100 dark matter constraints: examining the Leff dependence XENON10/100 dark matter constraints: examining the Leff dependence

2010-12-17

arxiv.org/abs/1012.3926v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

6 pages, 8 figures. Proceedings from the Identification of Dark Matter (IDM) 2010, Montpellier, France

Scientific paper

The determination of dark matter constraints from liquid xenon direct detection experiments depends upon the amount of scintillation light produced by nuclear recoils in the detector, a quantity that is characterized by the scintillation efficiency factor Leff. We examine how uncertainties in the measurements of Leff and the extrapolated behavior of Leff at low recoil energies (where measurements do not exist) affect the constraints from experiments such as XENON10 and XENON100, particularly in the light WIMP regions of interest for the DAMA and CoGeNT experimental results.

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