Dark Spinors Hawking Radiation in String Theory Black Holes
Roldão da Rocha (CMCC, Universidade Federal do ABC, 09210-580 Santo André, SP, Brazil, International School for Advanced Studies (SISSA), Via Bonomea 265, 34136 Trieste, Italy); R.T. Cavalcanti (CCNH, Universidade Federal do ABC, 09210-580 Santo André, SP, Brazil, Dipartimento di Fisica e Astronomia, Università di Bologna, Via Irnerio 46, 40126 Bologna, Italy)
The Hawking radiation spectrum of Kerr-Sen axion-dilaton black holes is derived, in the context of dark spinors tunnelling across the horizon. Since a black hole has a well defined temperature, it should radiate in principle all the standard model particles, similar to a black body at that temperature. We investigate the tunnelling of mass dimension one spin-1/2 dark fermions, which are beyond the standard model and are prime candidates to the dark matter. Their interactions with the standard model matter and gauge fields are suppressed by at least one power of unification scale, being restricted just to the Higgs field and to the graviton likewise. The tunnelling method for the emission and absorption of mass dimension one particles across the event horizon of Kerr-Sen axion-dilaton black holes is shown here to provide further evidence for the universality of black hole radiation, further encompassing particles beyond the standard model.
