Physics of Particles and Nuclei Letters

, Volume 8, Issue 8, pp 851–854

Proton-nucleus inelastic cross section at ultra high energy

Authors

  • Takeshi Kodama
    • Instituto de FísicaUniversidade Federal do Rio de Janeiro
  • Licínio Portugal
    • Instituto de FísicaUniversidade Federal Fluminense
Article

DOI: 10.1134/S1547477111080115

Cite this article as:
Kodama, T. & Portugal, L. Phys. Part. Nuclei Lett. (2011) 8: 851. doi:10.1134/S1547477111080115

Abstract

Energy dependence of proton-nucleus reaction cross section at very high energy is discussed. It is stressed that depending on the gluon distribution near the nuclear surface, proton-nucleous total cross section increases much more rapidly compared to the usual Glauber independent nucleon estimate. The recent observation of smaller Xmax than the expected value at UHECR domain can be an indication for such a mechanism.

Copyright information

© Pleiades Publishing, Ltd. 2011