Signals for black body limit in coherent ultraperipheral heavy ion collisions

2002/04/15 by L. Frankfurt, M. Strikman, M. Zhalov · 7 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Cross section (physics) #Heavy ion #High-Energy Particle Collisions Research #Ion #Limit (mathematics) #Meson #Nuclear physics #Particle physics #Photon #Physics #Pomeron #Production (economics) #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Scattering #hep-ph

paper · pdf · doi:10.1016/s0370-2693(02)01882-8

published as Phys.Lett.B537:51-61,2002 · 17 pages, 7 figures

arxiv created 2002/04/15 · openalex publication_date 2002/06/01 · arxiv updated 2014/11/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We argue that study of total cross section of photoabsorption and coherent photoproduction of ρ,ρ^′-mesons in ultraperipheral heavy ion collisions (UPC) is effective method to probe onset of black body limit(BBL) in the soft and hard QCD interactions. We illustrate the expected features of the onset of BBL using generalized vector dominance model. We show that this model describes very well ρ-meson coherent photoproduction at 6 ≤ E_γ ≤ 10 GeV. In the case of ρ-meson production we find a UPC cross section which is a factor ∼ 1.5 larger than the one found by Klein and Nystrand. The advantages of the process of coherent dijet production to probe onset of BBL in hard scattering regime where decomposition over the twists becomes inapplicable are explained and relative importance of the γ+Pomeron and γ+γ mechanisms is estimated.

Citations

• Revealing the Black-Body Regime of Small-xDeep-Inelastic Scattering through Final-State Signals
• The hadronic properties of the photon in high-energy interactions

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