A1 Journal article (refereed)
Implications for dark matter direct detection in the presence of LIGO-motivated primordial black holes (2020)


Hertzberg, Mark P.; Schiappacasse, Enrico D.; Yanagida, Tsutomu T. (2020). Implications for dark matter direct detection in the presence of LIGO-motivated primordial black holes. Physics Letters B, 807, 135566. DOI: 10.1016/j.physletb.2020.135566


JYU authors or editors


Publication details

All authors or editors: Hertzberg, Mark P.; Schiappacasse, Enrico D.; Yanagida, Tsutomu T.

Journal or series: Physics Letters B

ISSN: 0370-2693

eISSN: 1873-2445

Publication year: 2020

Volume: 807

Article number: 135566

Publisher: Elsevier

Publication country: Netherlands

Publication language: English

DOI: http://doi.org/10.1016/j.physletb.2020.135566

Open Access: Publication published in an open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/71277

Publication is parallel published: https://arxiv.org/abs/1910.10575


Abstract

We discuss formation of dark matter (DM) mini-halos around primordial black holes (PBHs) and its implication on DM direct detection experiments, including axion searches. Motivated by LIGO observations, we consider fDM≃0.01 as the fraction of DM in PBHs with masses 10M⊙−70M⊙. In this case, we expect the presence of dressed PBHs after Milky Way halo formation with mini-halo masses peaked around Mhalo∼(50−55)MPBH. We analyze the effect of tidal forces acting on dressed PBHs within the Milky Way galaxy. In the solar neighborhood, the mini-halos are resistant against tidal disruption from the mean-field potential of the galaxy and encounters with stars, but they undergo a small level of disruption caused by disk shocking. The presence of mini-halos around LIGO-motivated PBHs today could reduce by half the local dark matter background. High-resolution simulations are encouraged. If the proposed scenario is realized, chances of direct detection of DM would decrease.


Keywords: cosmology; dark matter; black holes

Free keywords: axion dark matter; primordial black holes; dark mini-halos; dark matter direct detection; LIGO-Virgo collaboration


Contributing organizations


Ministry reporting: Yes

Reporting Year: 2020


Last updated on 2020-30-07 at 08:52