Directional detection as a strategy to discover Galactic Dark Matter

被引：63
作者：
Billard, J. [1 ]
Mayet, F. [1 ]
Macias-Perez, J. F. [1 ]
Santos, D. [1 ]
机构：
[1] Univ Grenoble 1, CNRS, Lab Phys Subatom & Cosmol, Polytech Inst,IN2P3, Grenoble, France
来源：
PHYSICS LETTERS B | 2010年 / 691卷 / 03期
关键词：
Dark Matter; Directional detection; LIMITS;
D O I：
10.1016/j.physletb.2010.06.024
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Directional detection of Galactic Dark Matter is a promising search strategy for discriminating WIMP events from background. Technical progress on gaseous detectors and read-outs has permitted the design and construction of competitive experiments. However, to take full advantage of this powerful detection method, one need to be able to extract information from an observed recoil map to identify a WIMP signal. We present a comprehensive formalism, using a map-based likelihood method allowing to recover the main incoming direction of the signal and its significance, thus proving its Galactic origin. This is a blind analysis intended to be used on any directional data. Constraints are deduced in the (sigma(n), m(chi)) plane and systematic studies are presented in order to show that, using this analysis tool, unambiguous Dark Matter detection can be achieved on a large range of exposures and background levels. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：156 / 162
页数：7
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