Akimov, D;
Araújo, HM;
Barnes, EJ;
Belov, VA;
Bewick, A;
Burenkov, AA;
Cashmore, R;
... Walker, RJ; + view all
(2010)
Limits on inelastic dark matter from ZEPLIN-III.
Physics Letters B
, 692
(3)
pp. 180-183.
10.1016/j.physletb.2010.07.042.
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Abstract
We present limits on the WIMP-nucleon cross section for inelastic dark matter from a reanalysis of the 2008 run of ZEPLIN-III. Cuts, notably on scintillation pulse shape and scintillation-to-ionisation ratio, give a net exposure of 63kgday in the range 20-80 keV nuclear recoil energy, in which 6 events are observed. Upper limits on signal rate are derived from the maximum empty patch in the data. Under standard halo assumptions a small region of parameter space consistent, at 99% CL, with causing the 1.17tonyr DAMA modulation signal is allowed at 90% CL: it is in the mass range 45-60 GeVc-2 with a minimum CL of 87%, again derived from the maximum patch. This is the tightest constraint yet presented using xenon, a target nucleus whose similarity to iodine mitigiates systematic error from the assumed halo.
| Type: | Article |
|---|---|
| Title: | Limits on inelastic dark matter from ZEPLIN-III |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.physletb.2010.07.042 |
| Publisher version: | http://doi.org/10.1016/j.physletb.2010.07.042 |
| Language: | English |
| Additional information: | Copyright © 2010 Elsevier B.V. Open access under CC BY license. |
| Keywords: | Inelastic dark matter, WIMPs, Xenon |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1352130 |
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