Melanopogenesis: Dark Matter of (almost) any Mass and Baryonic Matter from the Evaporation of Primordial Black Holes weighing a Ton (or less). (arXiv:1812.10606v1 [astro-ph.CO])
<a href="http://arxiv.org/find/astro-ph/1/au:+Morrison_L/0/1/0/all/0/1">Logan Morrison</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Profumo_S/0/1/0/all/0/1">Stefano Profumo</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Yu_Y/0/1/0/all/0/1">Yan Yu</a>
The evaporation of primordial black holes with a mass in the $1 {rm
gram}lesssim M_{rm PBH}lesssim$1000 kg range can lead to the production of
dark matter particles of almost any mass in the range $0.1 {rm MeV}lesssim
m_{rm DM}lesssim 10^{18}$ GeV with the right relic density at very early
times, $taulesssim 10^{-10}$ s. We calculate, as a function of the primordial
black holes mass and initial abundance, the combination of dark matter particle
masses and number of effective dark degrees of freedom leading to the right
abundance of dark matter today, whether or not evaporation stops around the
Planck scale. In addition, since black hole evaporation can also lead to the
production of a baryon asymmetry, we calculate where dark matter production and
baryogenesis can concurrently happen, under a variety of assumptions:
baryogenesis via grand unification boson decay, via leptogenesis, or via
asymmetric co-genesis of dark matter and ordinary matter. Finally, we comment
on possible ways to test this scenario.
The evaporation of primordial black holes with a mass in the $1 {rm
gram}lesssim M_{rm PBH}lesssim$1000 kg range can lead to the production of
dark matter particles of almost any mass in the range $0.1 {rm MeV}lesssim
m_{rm DM}lesssim 10^{18}$ GeV with the right relic density at very early
times, $taulesssim 10^{-10}$ s. We calculate, as a function of the primordial
black holes mass and initial abundance, the combination of dark matter particle
masses and number of effective dark degrees of freedom leading to the right
abundance of dark matter today, whether or not evaporation stops around the
Planck scale. In addition, since black hole evaporation can also lead to the
production of a baryon asymmetry, we calculate where dark matter production and
baryogenesis can concurrently happen, under a variety of assumptions:
baryogenesis via grand unification boson decay, via leptogenesis, or via
asymmetric co-genesis of dark matter and ordinary matter. Finally, we comment
on possible ways to test this scenario.
http://arxiv.org/icons/sfx.gif
