A1 Journal article (refereed)
Implications for dark matter direct detection in the presence of LIGO-motivated primordial black holes (2020)
Hertzberg, M. P., Schiappacasse, E. D., & Yanagida, T. T. (2020). Implications for dark matter direct detection in the presence of LIGO-motivated primordial black holes. Physics Letters B, 807, Article 135566. https://doi.org/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: https://doi.org/10.1016/j.physletb.2020.135566
Publication open access: Openly available
Publication channel open access: 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
JUFO rating: 2