Ultrahigh-energy photonuclear cross sections

Raj Gandhi, Ina Sarcevic, Adam S. Burrows, Loyal Durand, Hong Pi

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


We present results of calculations of the total inelastic photon-air cross sections at ultrahigh energies (up to 108 GeV in the laboratory) of relevance to on-going cosmic-ray experiments. The calculations take into account the high-energy QCD structure of the photon and are performed for a variety of photon and proton structure functions. The total inelastic photon-air cross section is obtained from the photon-proton jet cross section via an eikonalization procedure using a QCD-based diffractive model. The results are discussed in the context of the apparent excess muon content of air showers associated with point sources.

Original languageEnglish (US)
Pages (from-to)263-267
Number of pages5
JournalPhysical Review D
Issue number1
StatePublished - 1990

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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