Akimov, DY;
Araújo, HM;
Barnes, EJ;
Belov, VA;
Bewick, A;
Burenkov, AA;
Chepel, V;
... Walker, RJ; + view all
(2012)
WIMP-nucleon cross-section results from the second science run of ZEPLIN-III.
Physics Letters B
, 709
(1-2)
pp. 14-20.
10.1016/j.physletb.2012.01.064.
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Abstract
We report experimental upper limits on WIMP-nucleon elastic scattering cross sections from the second science run of ZEPLIN-III at the Boulby Underground Laboratory. A raw fiducial exposure of 1344 kg{dot operator}days was accrued over 319 days of continuous operation between June 2010 and May 2011. A total of eight events was observed in the signal acceptance region in the nuclear recoil energy range 7-29 keV, which is compatible with background expectations. This allows the exclusion of the scalar cross-section above 4.8×10 -8 pb near 50 GeV/c 2 WIMP mass with 90% confidence. Combined with data from the first run, this result improves to 3.9×10 -8 pb. The corresponding WIMP-neutron spin-dependent cross-section limit is 8.0×10 -3 pb. The ZEPLIN programme reaches thus its conclusion at Boulby, having deployed and exploited successfully three liquid xenon experiments of increasing reach.
| Type: | Article |
|---|---|
| Title: | WIMP-nucleon cross-section results from the second science run of ZEPLIN-III |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.physletb.2012.01.064 |
| Publisher version: | http://dx.doi.org/10.1016/j.physletb.2012.01.064 |
| Language: | English |
| Additional information: | © 2012 Elsevier B.V. doi:10.1016/j.physletb.2012.01.064 Open access under CC BY license. Open access under CC BY license. |
| Keywords: | ZEPLIN-IIIDark matterWIMPsLiquid xenon detectors |
| 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.ucl.ac.uk/id/eprint/1352135 |
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