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Type: Artigo
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.
Subject: Colisões (Física)
Cromodinâmica quântica
Collisions (Physics)
Quantum chromodynamics
Country: Estados Unidos
Editor: American Physical Society
Rights: aberto
Identifier DOI: 10.1103/PhysRevD.90.057502
Date Issue: 2014
Appears in Collections:IFGW - Artigos e Outros Documentos

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