A Study of Parton Dynamics from Deep Inelastic Scattering Events Containing a Jet in the Forward Direction

Martin Karlsson

Research output: ThesisDoctoral Thesis (monograph)


The DIS ep-scattering parton dynamics at low-x is characterised by an initial state cascade in which the virtualities of the propagator gluons are expected to take any kinematically allowed value, in contrast to the leading log behaviour. These dynamics might be enhanced by selecting events in which an energetic jet is found in the forward angular region at HERA, 1.735 < etajet<2.79. The forward jet event differential cross-section is measured as a function of Bjoerken-x, of the forward jet pT, and of the fraction of the proton energy carried by the forward jet, xjet. A significant deviation from predictions based on standard DGLAP evolution can be observed. We also investigate events in which two hard jets (pT>3.5 GeV) are found in addition to the forward jet, and measure their cross-section. For this class of events we also investigate the cross-section as a function of eta, for different values of the angular distance, deltaeta, between the two hard jets.
Original languageEnglish
Awarding Institution
  • Particle and nuclear physics
  • [unknown], [unknown], Supervisor, External person
Award date2003 Jan 31
ISBN (Print)91-628-5539-5
Publication statusPublished - 2003

Bibliographical note

Defence details

Date: 2003-01-31
Time: 10:15
Place: Lecture hall B Department of Physics Lund.

External reviewer(s)

Name: Schlenstedt, Stefan
Title: Prof
Affiliation: [unknown]


Subject classification (UKÄ)

  • Subatomic Physics

Free keywords

  • quantum field theory
  • Elementary particle physics
  • DIS
  • ep scattering
  • H1
  • jets
  • forward jet
  • small-x
  • parton dynamics
  • Elementarpartikelfysik
  • kvantfältteori
  • Fysicumarkivet A:2002:Karlsson


Dive into the research topics of 'A Study of Parton Dynamics from Deep Inelastic Scattering Events Containing a Jet in the Forward Direction'. Together they form a unique fingerprint.

Cite this