BBN with light dark matter
arXiv:1211.4937 · doi:10.1088/1475-7516/2013/02/010
Abstract
Effects of light millicharged dark matter particles on primordial nucleosynthesis are considered. It is shown that if the mass of such particles is much smaller than the electron mass, they lead to strong overproduction of Helium-4. An agreement with observations can be achieved by non-vanishing lepton asymmetry. Baryon-to-photon ratio at BBN and neutrino- to-photon ratio both at BBN and at recombination are noticeably different as compared to the standard cosmological model. The latter ratio and possible lepton asymmetry could be checked by Planck. For higher mass of new particles the effect is much less pronounced and may even have opposite sign.
Replaced with the version accepted for publication in JCAP
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- An Improved Limit on Invisible Decays of Positronium
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Cited by in corpus (14)
- (In)direct Detection of Boosted Dark Matter
- Refined Bounds on MeV-scale Thermal Dark Sectors from BBN and the CMB
- Constraints on millicharged particles from Planck
- Frontiers in Nuclear Astrophysics
- Scattering, Damping, and Acoustic Oscillations: Simulating the Structure of Dark Matter Halos with Relativistic Force Carriers
- Dark matter-neutrino interactions through the lens of their cosmological implications
- Probing millicharged particles with NA64 experiment at CERN
- An Active-to-Sterile Neutrino Transition Dipole Moment and the XENON1T Excess
- Decaying Vector Dark Matter as an Explanation for the 3.5 keV Line from Galaxy Clusters
- Dark matter and generation of galactic magnetic fields
- Pico-charged intermediate particles rescue dark matter interpretation of 511 keV signal
- Relic abundance of MeV millicharged particles
- Constraints on millicharged particles by neutron stars
- New Limits on Light Dark Matter-Nucleon Scattering