Akimov, DY; Araujo, HM; Barnes, EJ; Belov, VA; Bewick, A; Burenkov, AA; ... Walker, RJ; + view all Akimov, DY; Araujo, HM; Barnes, EJ; Belov, VA; Bewick, A; Burenkov, AA; Cashmore, R; Chepel, V; Currie, A; Davidge, D; Dawson, J; Durkin, T; Edwards, B; Ghag, C; Hollingsworth, A; Horn, M; Howard, AS; Hughes, AJ; Jones, WG; Kalmus, GE; Kobyakin, AS; Kovalenko, AG; Lebedenko, VN; Lindote, A; Liubarsky, I; Lopes, MI; Luscher, R; Lyons, K; Majewski, P; Murphy, AS; Neves, F; Paling, SM; Cunha, JPD; Preece, R; Quenby, JJ; Reichhart, L; Scovell, PR; Silva, C; Solovov, VN; Smith, NJT; Smith, PF; Stekhanov, VN; Sumner, TJ; Thorne, C; Viveiros, LD; Walker, RJ; - view fewer (2010) Limits on inelastic dark matter from ZEPLIN-III.
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We present limits on the WIMP-nucleon cross section for inelastic dark matter derived from the 2008 run of ZEPLIN-III. Cuts, notably on scintillation pulse shape and scintillation-to-ionisation ratio, give a net exposure of 63 kg.days in the range 20-80keV 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 1.17 ton.year DAMA modulation signal is allowed at 90% CL: it is in the mass range 45-60 GeV with a minimum CL of 88%, again derived from the maximum patch. This is the tightest constraint on that explanation of the DAMA result yet presented using a xenon target.
|Title:||Limits on inelastic dark matter from ZEPLIN-III|
|Additional information:||4 pages, 5 figures. Updated with 1.17 ton.year DAMA results.|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Physics and Astronomy|
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