Baryon production by primordial black holes

Details Baryon production by primordial black holes Baryon production by primordial black holes

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979phlb...89..155t&link_type=abstract

Physics Letters B, Volume 89, Issue 1, p. 155-159.

Physics

17

Scientific paper

The evaporation of primordial black holes (PBH's) by the Hawking process can produce an excess of baryons over anti-baryons. Assuming a power-law form of the initial mass spectrum of PBH's and taking into account the observational constraints on that spectrum we calculate the baryon excess produced. We find that if the spectrum is steep (α>~3.5) or cut off for masses above ~ 109 g, the observed baryon/photon ratio of ~ 10-9 can be produced by PBH evaporations.
Enrico Fermi Fellow, The University of Chicago.

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