Significant Enhancement of Neutralino Dark Matter Annihilation from Electroweak Bremsstrahlung

被引：20

作者：

Bringmann, Torsten ^{[1
,2
]}

Calore, Francesca ^{[2
,3
]}

机构：

[1] Univ Oslo, Dept Phys, NO-0316 Oslo, Norway

[2] Univ Hamburg, Inst Theoret Phys 2, DE-22761 Hamburg, Germany

[3] Univ Amsterdam, GRAPPA Inst, NL-1090 GL Amsterdam, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 07期

关键词：

RADIATIVE PROCESSES; TELESCOPE;

D O I：

10.1103/PhysRevLett.112.071301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Indirect searches for the cosmological dark matter have become ever more competitive during the past years. Here, we report the first full calculation of leading electroweak corrections to the annihilation rate of supersymmetric neutralino dark matter. We find that these corrections can be huge, partially due to contributions that have been overlooked so far. Our results imply a significantly enhanced discovery potential of this well motivated dark matter candidate with current and upcoming cosmic ray experiments, in particular for gamma rays and models with somewhat small annihilation rates at the tree level.

引用

页数：5

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