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- Title
Proton–proton, pion–proton and pion–pion diffractive collisions at ultrahigh energies.
- Authors
Anisovich, V. V.; Nikonov, K. V.; Nikonov, V. A.; Nyiri, J.
- Abstract
The LHC energies are those at which the asymptotic regime in hadron–hadron diffractive collisions (pp, πp, ππ) might be switched on. Based on results of the Dakhno–Nikonov eikonal model which is a generalization of the Good–Walker eikonal approach for a continuous set of channels, we present a picture for transformation of the constituent quark mode to the black disk one. In the black disk mode (⎷s ≥ 10 TeV), we have a growth of the logarithm squared type for total and elastic cross-sections, σtot ~ ln2 s and σel ~ ln2 s and (τ = q⊥2 σtot)-scaling for diffractive scattering and diffractive dissociation of hadrons. The diffractive dissociation cross-section grows as σD ~ ln s, σDD ~ ln s, and their relative contribution tends to zero: σD/σtot → 0, σDD/σtot → 0. Asymptotic characteristics of diffractive and total cross-sections are universal, and this results in the asymptotical equality of cross-sections for all types of hadrons (the Gribov universality). The energy scale for switching on the asymptotic mode is estimated for different processes.
- Subjects
PROTON-proton interactions; PION-proton inclusive interactions; PION-pion interactions; COLLISIONS (Nuclear physics); NUCLEAR energy; HADRONS; EIKONAL equation
- Publication
International Journal of Modern Physics A: Particles & Fields; Gravitation; Cosmology; Nuclear Physics, 2014, Vol 29, Issue 15, p1450096-1
- ISSN
0217-751X
- Publication type
Article
- DOI
10.1142/S0217751X14500961