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- Title
BRANE-PRODUCTION AND THE NEUTRINO–NUCLEON CROSS SECTION AT ULTRAHIGH ENERGIES IN LOW SCALE GRAVITY MODELS.
- Authors
Jain, Pankaj; Kar, Supriya; Panda, Sukanta
- Abstract
The observed ultrahigh energy cosmic rays (UHECR) might require a modification of the basic laws of physics. In low scale gravity models, where the neutrino–nucleon cross section rises to typical hadronic values at energies above 10[sup 20] eV, the neutrino becomes a candidate for the primary that initiates these showers. We calculate the neutrino–nucleon cross section at ultrahigh energies by assuming that it is dominated by the production of p-branes. We show, using a generalized Randall–Sundrum model, that the neutrino–nucleon cross-section at neutrino energies of 10[sup 20] eV is of the order of 100 mb, which is required for explaining the UHECR events. Similar results also follow in other models such as the Lykken–Randall model.
- Subjects
NEUTRINOS; COSMIC rays; GRAVITY; ASTROPHYSICS; METAPHYSICAL cosmology
- Publication
International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology, 2003, Vol 12, Issue 9, p1593
- ISSN
0218-2718
- Publication type
Article
- DOI
10.1142/S0218271803004316