arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1202.2869hep-phastro-ph.EPastro-ph.HEastro-ph.SR
收藏

利用中性中微子间接探测暗物质

Indirect Dark Matter Detection in the Light of Sterile Neutrinos

Arman Esmaili, Orlando L. G. Peres

摘要:

最近对短基线中微子振荡数据的整体拟合表明,存在一个(或多个)不育中微子态,这将导致新的质量分裂Δm^2 ~1 eV^2。我们考虑了这种新的状态对太阳内部暗物质湮灭产生的中微子演化的影响。研究表明,能量E_v> 100 GeV的中微子发生了共振的活动-无菌振荡,从而使到达地球的中微子流减少.作为这种效应的一个例子,我们提出的振荡概率的情况下,单色中微子从直接湮灭的暗物质粒子的中微子和耗尽由于不育中微子的存在。

英文摘要:

The recent global fit of short baseline neutrino oscillation data favors the presence of one (or more) sterile neutrino state which leads to new mass splitting Δm^2 ~1 eV^2. We consider the effect of this new states on the evolution of neutrinos from the dark matter annihilation inside the Sun. We show that neutrinos with energy E_ν> 100 GeV undergo resonant active-sterile oscillation which depletes the flux of neutrinos arriving at the Earth. As an example of this effect, we present the oscillation probabilities for the case of monochromatic neutrinos from the direct annihilation of dark matter particles to neutrinos and the depletion due to the presence of sterile neutrinos.

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。

↑