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The Elusive p-air Cross Section

Martin BlockNorthwestern University

1) Sifting data in the real world

2) Obtaining the p-air cross section from accelerator data

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B, GeV-2

pp, mb

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1e+1 1e+2 1e+3 1e+4 1e+5

, in

mb.

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s, in GeV

AGASA Air Shower Data

Fly's Eye Air Shower Data

(pbar-p)(pp)

The The publishedpublished cosmic ray data cosmic ray data (the Diamond and Triangles) (the Diamond and Triangles) are the problemare the problem

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