Li, Zhuo 2011 对伽马暴中微子流量的修正

主要内容:
考虑中微子转变为pi介子，流量将降低，和现在Icecube看不到可以吻合。

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Title:		Note on the normalization of predicted gamma-ray burst neutrino flux
Authors:		Li, Zhuo
Affiliation:		AA(Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China)
Publication:		Physical Review D, vol. 85, Issue 2, id. 027301 (PhRvD Homepage)
Publication Date:		01/2012
Origin:		APS
PACS Keywords:		Neutrino, muon, pion, and other elementary particles; cosmic rays, Neutrino mass and mixing, gamma-ray sources; gamma-ray bursts, Cosmic rays
DOI:		10.1103/PhysRevD.85.027301
Bibliographic Code:		2012PhRvD..85b7301L

Abstract

We note that the theoretical prediction of neutrinos from gamma-ray bursts (GRBs) by IceCube overestimates the GRB neutrino flux, because they ignore both the energy dependence of the fraction of proton energy transferred to charged pions and the radiative energy loss of secondary pions and muons when calculating the normalization of the neutrino flux. After correction, GRB neutrino flux is reduced by a factor ˜5 for typical GRB spectral parameters and may be consistent with the present zero event detected by IceCube. More observations are important to push the sensitivity below the prediction and test whether GRBs are the sources of ultrahigh energy cosmic rays.

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