Nonlinear Evolution in High Energy QCD
(2007)- Abstract
- QCD at very high energies is still not very well understood. Difficulties arise from a strong non-linear dynamics and also from nonperturbative physics. Detailed analytic calculations are often only possible either for simple toy models, or for asymptotically high energies. In this thesis we investigate the high energy dynamics, with the goal of finding a realistic, working model for high energy QCD. We develop a phenomenological model based on the QCD dipole formalism. The model includes contributions both from saturation and unitarisation, and also from non-leading effects such as energy conservation and running coupling. The model is implemented in a Monte Carlo simulation, and is able to reproduce data from high energy processes... (More)
- QCD at very high energies is still not very well understood. Difficulties arise from a strong non-linear dynamics and also from nonperturbative physics. Detailed analytic calculations are often only possible either for simple toy models, or for asymptotically high energies. In this thesis we investigate the high energy dynamics, with the goal of finding a realistic, working model for high energy QCD. We develop a phenomenological model based on the QCD dipole formalism. The model includes contributions both from saturation and unitarisation, and also from non-leading effects such as energy conservation and running coupling. The model is implemented in a Monte Carlo simulation, and is able to reproduce data from high energy processes relevant for the LHC. (Less)
- Abstract (Swedish)
- Popular Abstract in Swedish
QCD vid höga energier är fortfarande inte väl förstådd. Svårigheter uppkommer ifrån en starkt icke-linjär dynamik, samt från icke-störningsmässiga fenomen. Analytiska beräkningar är oftast möjliga enbart för enkla leksaksmodeller, eller för asymptotiska energier.
I denna avhandling undersöker vi dynamiken i högenergiprocesser, med målet att finna en fungerande och realistisk modell för högenergi-QCD. Vi utvecklar en fenomenologisk modell för högenergi-QCD baserad på QCD-dipolformalismen. Modellen inkluderar bidrag både från saturering och unitarisering, samt från icke-ledande effekter såsom energibevaring och löpande koppling. Modellen implementeras i en datorsimulering, och... (More) - Popular Abstract in Swedish
QCD vid höga energier är fortfarande inte väl förstådd. Svårigheter uppkommer ifrån en starkt icke-linjär dynamik, samt från icke-störningsmässiga fenomen. Analytiska beräkningar är oftast möjliga enbart för enkla leksaksmodeller, eller för asymptotiska energier.
I denna avhandling undersöker vi dynamiken i högenergiprocesser, med målet att finna en fungerande och realistisk modell för högenergi-QCD. Vi utvecklar en fenomenologisk modell för högenergi-QCD baserad på QCD-dipolformalismen. Modellen inkluderar bidrag både från saturering och unitarisering, samt från icke-ledande effekter såsom energibevaring och löpande koppling. Modellen implementeras i en datorsimulering, och lyckas reproducera högenergidata. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/598967
- author
- Avsar, Emil LU
- supervisor
- opponent
-
- Professor McLerran, Larry, Brookhaven National Laboratory, NY, USA
- organization
- publishing date
- 2007
- type
- Thesis
- publication status
- published
- subject
- keywords
- Elementarpartikelfysik, quantum field theory, DIS, Elementary particle physics, Saturation, QCD, Small-x Physics, kvantfältteori, High energy interactions, cosmic rays, Kosmisk strålning, högenergi
- pages
- 228 pages
- publisher
- Theoretical High Energy Physics
- defense location
- Lecture Hall F, Department of Theoretical Physics
- defense date
- 2007-10-26 10:15:00
- ISBN
- 978-91-628-7224-3
- language
- English
- LU publication?
- yes
- id
- b0f0056f-9280-4de0-9c11-543771f194e1 (old id 598967)
- date added to LUP
- 2016-04-04 11:50:43
- date last changed
- 2023-04-18 18:23:10
@phdthesis{b0f0056f-9280-4de0-9c11-543771f194e1, abstract = {{QCD at very high energies is still not very well understood. Difficulties arise from a strong non-linear dynamics and also from nonperturbative physics. Detailed analytic calculations are often only possible either for simple toy models, or for asymptotically high energies. In this thesis we investigate the high energy dynamics, with the goal of finding a realistic, working model for high energy QCD. We develop a phenomenological model based on the QCD dipole formalism. The model includes contributions both from saturation and unitarisation, and also from non-leading effects such as energy conservation and running coupling. The model is implemented in a Monte Carlo simulation, and is able to reproduce data from high energy processes relevant for the LHC.}}, author = {{Avsar, Emil}}, isbn = {{978-91-628-7224-3}}, keywords = {{Elementarpartikelfysik; quantum field theory; DIS; Elementary particle physics; Saturation; QCD; Small-x Physics; kvantfältteori; High energy interactions; cosmic rays; Kosmisk strålning; högenergi}}, language = {{eng}}, publisher = {{Theoretical High Energy Physics}}, school = {{Lund University}}, title = {{Nonlinear Evolution in High Energy QCD}}, year = {{2007}}, }