ZEPLIN-III实验首次科学运行对自旋相关WIMP-核子截面的限制
高能物理 - 实验
2009-10-29 v1
摘要
我们利用ZEPLIN-III实验首次科学运行的数据，提出了对WIMP-核子自旋相关弹性截面的新实验约束。ZEPLIN-III是一个基于Boulby矿的两相氙实验，用于搜寻银河系暗物质WIMP。对约450 kg·天的有效曝光量进行分析，最可能信号为零事件，从而在WIMP质量为55 GeV/时，对纯WIMP-中子截面给出了90%置信度的上限 pb。使用了基于Bonn CD核子-核子势的核自旋结构的最新计算，用于奇中子同位素Xe和Xe。这些计算表明，氙靶对自旋相关WIMP-质子相互作用的灵敏度远低于先前计算所暗示的水平，而WIMP-中子灵敏度仅降低了约2倍。
引用
@article{arxiv.0901.4348,
title = {Limits on the spin-dependent WIMP-nucleon cross-sections from the first science run of the ZEPLIN-III experiment},
author = {V. N. Lebedenko and H. M. Araujo and E. J. Barnes and A. Bewick and R. Cashmore and V. Chepel and D. Davidge and J. Dawson and T. Durkin and B. Edwards and C. Ghag and V. Graffagnino and M. Horn and A. S. Howard and A. J. Hughes and W. G. Jones and M. Joshi and G. E. Kalmus and A. G. Kovalenko and A. Lindote and I. Liubarsky and M. I. Lopes and R. Luscher and K. Lyons and P. Majewski and A. StJ. Murphy and F. Neves and J. Pinto da Cunha and R. Preece and J. J. Quenby and P. R. Scovell and C. Silva and V. N. Solovov and N. J. T. Smith and P. F. Smith and V. N. Stekhanov and T. J. Sumner and C. Thorne and R. J. Walker},
journal= {arXiv preprint arXiv:0901.4348},
year = {2009}
}
备注
4 pages, 2 figures