Instantons and Saturation in the Colour Dipole Picture
| dc.creator | Schrempp, F. | |
| dc.creator | Utermann, A. | |
| dc.date | 2002-07-03 | |
| dc.date | 2002-07-08 | |
| dc.date.accessioned | 2026-07-07T03:47:22Z | |
| dc.date.available | 2026-07-07T03:47:22Z | |
| dc.description | We pursue the intriguing possibility that larger-size instantons build up diffractive scattering, with the marked instanton-size scale $<ρ> \approx 0.5$ fm being reflected in the conspicuous ``geometrization'' of soft QCD. As an explicit illustration, the known instanton contribution to DIS is transformed into the intuitive colour dipole picture. With the help of lattice results, the $q \bar{q}$-dipole size r is carefully increased towards hadronic dimensions. Unlike pQCD, one now observes a competition between two crucial length scales: the dipole size r and the size $ρ$ of the background instanton that is sharply localized around $<ρ> \approx 0.5$ fm. For r exceeding $<ρ>$, the dipole cross section indeed saturates towards a geometrical limit, proportional to the area $π<ρ>^2$, subtended by the instanton. | |
| dc.description | 5 pages, 1 figure, presented at the Xth International Workshop on Deep Inelastic Scattering (DIS 2002), Cracow, 30 April - 4 May 2002, one reference added | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0207052 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0207052 | |
| dc.identifier | Acta Phys.Polon. B33 (2002) 3633-3638 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/41643 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Instantons and Saturation in the Colour Dipole Picture | |
| dc.type | text |