Aug 23 – 28, 2010
Europe/Berlin timezone

Lepton number, black hole entropy and 10^32 copies of the SM

Aug 27, 2010, 5:37 PM
Wolfgang-Paul-HS (Bonn)



Nussallee 12


Prof. Heinrich Paes (TU Dortmund)


Lepton number violating processes are a typical problem in theories with a low quantum gravity scale. Here we examine lepton number violation in theories with a saturated black hole bound on a large number of species. Such theories have been advocated recently as a possible solution to the hierarchy problem and an explanation of the smallness of neutrino masses. Naively one would expect black holes to introduce TeV scale LNV operators, thus generating unacceptably large rates of LNV processes. We show, however, that this does not happen in this scenario due to a complicated compensation mechanism between contributions of different Majorana neutrino states to these processes. The phenomenology of such scenarios is discussed.

Primary author

Prof. Heinrich Paes (TU Dortmund)


Ivan Schmidt (Universidad Tecnica Federico Santa Maria, Valparaiso, Chile) Sergey Kovalenko (Universidad Tecnica Federico Santa Maria, Valparaiso, Chile)

Presentation materials