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arXiv 0910.2601astro-ph.CO
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ATIC、FERMI、EGRET和PAMELA对暗物质的间接解释

Indirect Dark Matter Searches in the Light of ATIC, FERMI, EGRET and PAMELA

Wim de Boer

摘要:

最近,来自PAMELA的反质子和正电子的新数据,来自ATIC、FERMI和HESS的e- + e+谱,以及TeV能量的新数据都显示出与预期的偏差,这引起了一系列有趣的新解释,从背景、标准天体物理源到暗物质(DM)湮灭的信号。不幸的是,过量的正电子与明显过量的反质子或伽马射线并不匹配,因此一种新的具有亲轻子WIMP候选者的DM方案被引用。另一方面,正电子分数的增加,可能具有任何新物理学的光谱形状,与质子背景的预期形状很好地匹配。

英文摘要:

Recently, new data on antiprotons and positrons from PAMELA, e- + e+ spectra from ATIC, FERMI and HESS up to TeV energies all indicate deviations from expectations, which has caused an interesting mix of new explanations, ranging from background, standard astrophysical sources to signals from dark matter (DM) annihilation. Unfortunately, the excess in positrons is not matched with obvious excesses in antiprotons or gamma rays, so a new class of DM scenarios with leptophilic WIMP candidates have been invoked. On the other hand, the increase in the positron fraction, which could have had any spectral shape for new physics, matches well the shape expected from proton background.

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。

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