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arXiv 1003.5626hep-ex
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ZEPLIN- III非弹性暗物质的极限

Limits on inelastic dark matter from ZEPLIN-III

D. Yu. Akimov, H. M. Araujo, E. J. Barnes, V. A. Belov, A. Bewick, A. A. Burenkov, R. Cashmore, V. Chepel, A. Currie, D. Davidge, J. Dawson, T. Durkin, B. Edwar… 展开作者

D. Yu. Akimov, H. M. Araujo, E. J. Barnes, V. A. Belov, A. Bewick, A. A. Burenkov, R. Cashmore, V. Chepel, A. Currie, D. Davidge, J. Dawson, T. Durkin, B. Edwards, C. Ghag, A. Hollingsworth, M. Horn, A. S. Howard, A. J. Hughes, W. G. Jones, G. E. Kalmus, A. S. Kobyakin, A. G. Kovalenko, V. N. Lebedenko, A. Lindote, I. Liubarsky, M. I. Lopes, R. Luscher, K. Lyons, P. Majewski, A. StJ. Murphy, F. Neves, S. M. Paling, J. Pinto da Cunha, R. Preece, J. J. Quenby, L. Reichhart, P. R. Scovell, C. Silva, V. N. Solovov, N. J. T. Smith, P. F. Smith, V. N. Stekhanov, T. J. Sumner, C. Thorne, L. de Viveiros, R. J. Walker

摘要:

我们目前的限制WIMP核子截面的非弹性暗物质来自2008年运行的ZEPLIN-III。特别是对闪烁脉冲形状和闪烁-电离比的削减,在20- 80 keV的核反冲能量范围内,净照射量为63 kg.天,其中观察到6个事件。信号速率的上限来自数据中的最大空补丁。在标准的晕假设下,在99%的CL下,允许一个小的参数空间区域与引起1.17吨年DAMA调制信号一致:它在45-60 GeV的质量范围内,最小CL为88%,同样来自最大补丁。这是对使用氙靶的DAMA结果的解释的最严格的限制。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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