Phys. Rev. D 78, 067702 (2008) [3 pages]Bound on four-dimensional Planck massReceived 30 June 2008; published 30 September 2008 In this paper we derive a bound using data from cosmic rays physics on a model recently proposed to solve the hierarchy problem by lowering the Planck scale to the TeV region without the introduction of extra dimensions. We show that the nonobservation of small black holes by AGASA implies a model independent limit for the four-dimensional reduced Planck mass of roughly 488 GeV. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.78.067702
DOI:
10.1103/PhysRevD.78.067702
PACS:
12.90.+b, 04.50.Kd, 04.60.Bc, 11.10.Hi
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