4.6 Article

Effects of residue background events in direct dark matter detection experiments on the determination of the WIMP mass

出版社

IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2010/08/014

关键词

dark matter simulations; dark matter experiments

资金

  1. National Science Council of R.O.C. [NSC-96-2112-N-009-023-MY3, NSC-98-2811- M-006-044]
  2. LHC Physics Focus Group, National Center of Theoretical Sciences, R.O.C.

向作者/读者索取更多资源

In the earlier work on the development of a model- independent data analysis method for determining the mass of Weakly Interacting Massive Particles (WIMPs) by using measured recoil energies from direct Dark Matter detection experiments directly, it was assumed that the analyzed data sets are background- free, i. e., all events are WIMP signals. In this article, as a more realistic study, we take into account a fraction of possible residue background events, which pass all discrimination criteria and then mix with other real WIMP-induced events in our data sets. Our simulations show that, for the determination of the WIMP mass, the maximal acceptable fraction of residue background events in the analyzed data sets of O(50) total events is similar to 20%, for background windows of the entire experimental possible energy ranges, or in low energy ranges; while, for background windows in relatively higher energy ranges, this maximal acceptable fraction of residue background events can not be larger than similar to 10%. For a WIMP mass of 100 GeV with 20% background events in the windows of the entire experimental possible energy ranges, the reconstructed WIMP mass and the 1 sigma statistical uncertainty are similar to 97 GeV +61%-35% (similar to 94 GeV +55%-33% for background- free data sets).

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据