来自暗物质湮灭的宇宙射线与大爆炸核合成
高能物理 - 唯象学
2010-04-21 v3 宇宙学与河外天体物理
高能天体物理现象
摘要
PAMELA和ATIC实验近期对宇宙射线电子和正电子通量的测量可能表明存在具有大湮灭截面的湮灭暗物质。我们表明,大爆炸核合成时期的暗物质湮灭会影响轻元素丰度,并且对于强子湮灭的情况,这对此类湮灭暗物质场景给出了严格的约束。对轻子湮灭暗物质模型的约束则不那么严格。
引用
@article{arxiv.0901.3582,
title = {Cosmic Rays from Dark Matter Annihilation and Big-Bang Nucleosynthesis},
author = {Junji Hisano and Masahiro Kawasaki and Kazunori Kohri and Takeo Moroi and Kazunori Nakayama},
journal= {arXiv preprint arXiv:0901.3582},
year = {2010}
}
备注
21 pages, 5 figures; added references; corrected the electromagnetic-emission part and got milder constraint from the photodissociation processes by a factor of 50 (v3)