Heavy decaying dark matter and large-scale anisotropy of high-energy cosmic rays

被引：13

作者：

Kalashev, O. E. ^{[1
]}

Kuznetsov, M. Yu. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

来源：

JETP LETTERS | 2017年 / 106卷 / 02期

基金：

俄罗斯科学基金会;

关键词：

PARTICLE-PRODUCTION; NEUTRINOS; INFLATION; SPECTRUM;

D O I：

10.1134/S0021364017140016

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We examine the role of the large-scale anisotropy of the high-energy cosmic ray distribution in a search for the heavy decaying dark matter (DM) signal. Using recent anisotropy measurements from the extensive air shower (EAS) observatories, we constrain the lifetime of the DM particles with masses 10(7) ae<currency> M (X) ae<currency> 10(16) GeV. These constraints appear to be weaker than that obtained with the high-energy gamma-ray limits. We also estimate the desired precision level for the anisotropy measurements to discern the decaying DM signal marginally allowed by the gamma-ray limits and discuss the prospects of the DM search with the modern EAS facilities.

引用

页码：73 / 80

页数：8

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