Total cross sections at ultrahigh energy from cosmic ray experiments

Details Total cross sections at ultrahigh energy from cosmic ray experiments Total cross sections at ultrahigh energy from cosmic ray experiments

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986nyasa.461..239y&link_type=abstract

(Aspen Center for Physics, DOE, NSF, et al., Aspen Winter Physics Conference, 1st, Aspen, CO, Jan. 6-19, 1985) New York Academy

Physics

2

Cosmic Ray Showers, High Energy Interactions, Inelastic Scattering, Proton Scattering, Proton-Proton Reactions, Scattering Cross Sections, Energy Spectra, Glauber Theory

Scientific paper

The principles and experimental procedures of methods used to estimate proton-air inelastic cross sections (PAICSs) from cosmic-ray air-shower data at energies above 10 PeV are reviewed, and data are compiled in tables and graphs and characterized. The data show that the PAICSs at air-shower energies (sq rt s greater than about 15 TeV) are a factor of two greater than those at Fermilab energies (sq rt s = about 20 GeV). A technique for relating PAICSs to the total proton-proton cross sections is developed on the basis of Glauber theory, taking quasi-elastic excitation, diffractive dissociation, and screening due to diffractive inelastic processes into account. Measured PAICSs are compared with the predictions of four different models of the energy variation of proton-proton elastic parameters, and best agreement is obtained when the total cross sections vary as the square of log s.

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