Measurement of the gluon PDF at small x with neutrino telescopes

Details Measurement of the gluon PDF at small x with neutrino telescopes Measurement of the gluon PDF at small x with neutrino telescopes

2000-03-31

arxiv.org/abs/hep-ph/0003307v2

Phys.Rev. D63 (2001) 036006

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages with 16 figures - new version, comments added, same results and figures

Scientific paper

10.1103/PhysRevD.63.036006

We analyze the possibility that neutrino telescopes may provide an experimental determination of the slope lambda of the gluon distribution in the proton at momentum fractions x smaller than the accelerator reach. The method is based on a linear relation between lambda and the spectral index (slope) of the down-going atmospheric muon flux above 100 TeV, for which there is no background. Considering the uncertainties in the charm production cross section and in the cosmic ray composition, we estimate the error on the measurement of lambda through this method, excluding the experimental error of the telescopes, to be ~ +/- 0.2

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