✦ LIBER ✦
Gluon saturation effects at the nuclear surface: Inelastic cross section of proton–nucleus in the ultra-high-energy cosmic ray domain
✍ Scribed by L. Portugal; T. Kodama
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 299 KB
- Volume
- 837
- Category
- Article
- ISSN
- 0375-9474
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✦ Synopsis
Considering the high-energy limit of the QCD gluon distribution inside a nucleus, we calculate the proton-nucleus total inelastic cross section using a simplified dipole model. We show that, if gluon saturation occurs in the nuclear surface region, the total cross section of proton-nucleus collisions increases more rapidly as a function of the incident energy compared to that of a Glauber-type estimate. We discuss the implications of this with respect to recent ultra-high-energy cosmic ray experiments.