期刊
PHYSICAL REVIEW D
卷 91, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.91.103533
关键词
-
资金
- STFC
- Leverhulme Trust
- European Research Council (ERC) under the EU Seventh Framework Programme (FP7)/ERC Starting Grant [278234]
- [MultiDark CSD2009-00064]
- STFC [ST/L000393/1, ST/J000388/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/L000393/1, 1095471] Funding Source: researchfish
With positive signals from multiple direct detection experiments, it will, in principle, be possible to measure the mass and cross sections of weakly interacting massive particle (WIMP) dark matter. Recent work has shown that, with a polynomial parametrization of the WIMP speed distribution, it is possible to make an unbiased measurement of the WIMP mass, without making any astrophysical assumptions. However, direct detection experiments are not sensitive to low-speed WIMPs and, therefore, any model-independent approach will lead to a bias in the cross section. This problem can be solved with the addition of measurements of the flux of neutrinos from the Sun. This is because the flux of neutrinos produced from the annihilation of WIMPs which have been gravitationally captured in the Sun is sensitive to low-speed WIMPs. Using mock data from next-generation direct detection experiments and from the IceCube neutrino telescope, we show that the complementary information from IceCube on low-speed WIMPs breaks the degeneracy between the cross section and the speed distribution. This allows unbiased determinations of the WIMP mass and spin-independent and spin-dependent cross sections to be made, and the speed distribution to be reconstructed. We use two parametrizations of the speed distribution: binned and polynomial. While the polynomial parametrization can encompass a wider range of speed distributions, this leads to larger uncertainties in the particle physics parameters.
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。
推荐
暂无数据