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|Title:||Estimating nonlinear QCD effects in ultrahigh energy neutrino events at IceCube|
|Author:||Goncalves, V. P.|
Gratieri, D. R.
|Abstract:||The number of ultrahigh energy events at IceCube is estimated, for the first time, taking into account nonlinear QCD effects in the neutrino-hadron cross section. We assume that the extragalactic neutrino flux is given by Phi(v)(E-v) = Phi E-0(v)-2 and estimate the neutrino-hadron cross section using the dipole approach and a phenomenological model for the dipole-hadron cross section based on nonlinear QCD dynamics. We demonstrate that the nonlinear prediction is able to describe the current IceCube data and that the magnitude of the nonlinear effects is larger than 20% for visible energies of order of 2 PeV and increases with the neutrino energy. Our main conclusion is that the nonlinear QCD effects are non-negligible and should be taken into account in the analysis of the number of ultrahigh energy events.|
|Editor:||American Physical Society|
|Appears in Collections:||IFGW - Artigos e Outros Documentos|
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