Cosmic rays as probes of large extra dimensions and TeV gravity

Emparan, Roberto; Masip, Manuel; Rattazzi, Riccardo

doi:10.1103/PhysRevD.65.064023

Cosmic rays as probes of large extra dimensions and TeV gravity

Roberto Emparan
(
- CERN
)
,
Manuel Masip
(
- Granada U., Theor. Phys. Astrophys.
)
,
Riccardo Rattazzi
(
- CERN
)

Sep, 2001

17 pages

Published in:

Phys.Rev.D 65 (2002) 064023

e-Print:

hep-ph/0109287 [hep-ph]

DOI:

10.1103/PhysRevD.65.064023

Report number:

CERN-TH-2001-259

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Abstract:

If there are large extra dimensions and the fundamental Planck scale is at the TeV scale, then the question arises of whether ultra-high energy cosmic rays might probe them. We study the neutrino-nucleon cross section in these models. The elastic forward scattering is analyzed in some detail, hoping to clarify earlier discussions. We also estimate the black hole production rate. We study energy loss from graviton mediated interactions and conclude that they can not explain the cosmic ray events above the GZK energy limit. However, these interactions could start horizontal air showers with characteristic profile and at a rate higher than in the Standard Model.

04.70.-s
98.70.Sa
04.50.+h
cosmic radiation
GZK effect
space-time: higher-dimensional
neutrino nucleon: elastic scattering
neutrino nucleon: forward scattering
cross section: energy dependence
black hole: production

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