P Draggiotis et al JCAP07(2008)014 doi:10.1088/1475-7516/2008/07/014
Hawking evaporation of cosmogenic black holes in TeV-gravity models
P Draggiotis1, M Masip1 and I Mastromatteo1,2
Show affiliationsWe study the properties of black holes of mass 104–1011 GeV in models with the fundamental scale of gravity at the TeV. These black holes could be produced in the collision of a ultrahigh energy cosmic ray with a dark matter particle in our galactic halo or with another cosmic ray. We show that QCD bremsstrahlung and pair production processes are unable to thermalize the particles exiting the black hole, so a chromosphere is never formed during Hawking evaporation. We evaluate with HERWIG the spectrum of stable four-dimensional particles emitted during the Schwarzschild phase and find that in all cases it is peaked at energies around 0.2 GeV, with an approximate 43% of neutrinos, 28% of photons, 16% of electrons and 13% of protons. Bulk gravitons are peaked at higher energies; they account for 0.4% of the particles (16% of the total energy) emitted by the most massive black holes in n = 6 extra dimensions or just the 0.02% of the particles (1.4% of the energy) emitted by a 10 TeV black hole for n = 2.
- Keywords
- PACS
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04.70.Dy Quantum aspects of black holes, evaporation, thermodynamics
95.35.+d Dark matter (stellar, interstellar, galactic, and cosmological)
- Subjects
- Dates
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Issue 07 (July 2008)
Received 16 May 2008, accepted for publication 26 June 2008
Published 22 July 2008
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Hawking evaporation of cosmogenic black holes in TeV-gravity models
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