Exotic energy injection with ExoCLASS: application to the Higgs portal model and evaporating black holes

被引：70

作者：

Stoecker, Patrick ^{[1
]}

Kraemer, Michael ^{[1
]}

Lesgourgues, Julien ^{[1
]}

Poulin, Vivian ^{[2
]}

机构：

[1] Rhein Westfal TH Aachen, Inst Theoret Particle Phys & Cosmol TTK, D-52056 Aachen, Germany

[2] Johns Hopkins Univ, Dept Phys & Astron, San Martin Dr, Baltimore, MD 21218 USA

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2018年 / 03期

关键词：

particle physics - cosmology connection; reionization; dark matter theory; CMBR theory; GLUON-JET EMISSION; DARK-MATTER; QUARK-JET; PARTICLES;

D O I：

10.1088/1475-7516/2018/03/018

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We devise a new user-friendly tool interfaced with the Boltzmann code CLASS to deal with any kind of exotic electromagnetic energy injection in the universe and its impact on anisotropies of the Cosmic Microwave Background. It makes use of the results from standard electromagnetic cascade calculations develop in the context of WIMP annihilation, generalized to incorporate any injection history. We first validate it on a specific WIMP scenario, the Higgs Portal model, confirming that the standard effective on-the-spot treatment is accurate enough. We then analyze the more involved example of evaporating Primordial Black Holes (PBHs) with masses in the range [3 x 10(13), 5 x 10(16)] g, for which the standard approximations break down. We derive robust CMB bounds on the relic density of evaporating PBHs, ruling out the possibility for PBHs with a monochromatic distribution of masses in the range [3 x 10(13), 2.5 x 10(16)] g to represent all of the Dark Matter in our Universe. Remarkably, we confirm with an accurate study that the CMB bounds are several orders of magnitude stronger than those from the galactic gamma-ray background in the range [3 x 10(13), 3 x 10(14)] g. A future CMB experiment like CORE+, or an experiment attempting at measuring the 21 cm signal from the Dark Ages could greatly improve the sensitivity to these models.

引用

页数：31

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