6533b7d8fe1ef96bd126ad36
RESEARCH PRODUCT
Implications for dark matter direct detection in the presence of LIGO-motivated primordial black holes
Mark P. HertzbergEnrico D. SchiappacasseEnrico D. SchiappacasseEnrico D. SchiappacasseTsutomu T. Yanagidasubject
High Energy Physics - TheoryDISRUPTIONHALO MODELSPrimordial black holeAstrophysicsDark mini-halosdark matter direct detectionkosmologia01 natural sciencesGeneral Relativity and Quantum CosmologyLIMITSHigh Energy Physics - Phenomenology (hep-ph)BulgePhysicsprimordial black holeslcsh:QC1-999High Energy Physics - PhenomenologyBULGEMILKY-WAYLIGO-Virgo collaborationHaloAstrophysics - Cosmology and Nongalactic Astrophysicsaxion dark matterNuclear and High Energy PhysicsCosmology and Nongalactic Astrophysics (astro-ph.CO)Axion dark matterMilky WayDark mattermustat aukotFOS: Physical sciencesPrimordial black holesGeneral Relativity and Quantum Cosmology (gr-qc)Astrophysics::Cosmology and Extragalactic AstrophysicsDark matter direct detection114 Physical sciencespimeä ainedark mini-halos0103 physical sciences010306 general physicsAxionCP CONSERVATIONAstrophysics::Galaxy Astrophysics010308 nuclear & particles physicsCONSTRAINTSAstrophysics - Astrophysics of GalaxiesLIGOGalaxyHigh Energy Physics - Theory (hep-th)Astrophysics of Galaxies (astro-ph.GA)lcsh:Physicsdescription
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 $f_{\textrm{DM}} \simeq 0.01$ as the fraction of DM in PBHs with masses $10 M_{\odot} - 70 M_{\odot}$. In this case, we expect the presence of dressed PBHs after Milky Way halo formation with mini-halo masses peaked around $M_{\textrm{halo}} \sim (50-55) M_{\textrm{PBH}}$. 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-10-23 |