Event Shapes and Power Corrections at HERA

McCance, Gavin John (2001) Event Shapes and Power Corrections at HERA. PhD thesis, University of Glasgow.

Abstract

A measurement of event shape variables in neutral current deep inelastic ep scattering has been made at HERA with the ZEUS detector, using an integrated luminosity of 45.2pb-1. The variables thrust and broadening, with respect to the photon axis and the thrust axis, as well as the jet-mass and C-parameter, have been measured in the current region of the Breit frame in the kinematic range 10 < Q2 < 20480 GeV2 and 0.0006 < x < 0.6. The Q dependence of the event shapes have been compared to QCD predictions using Next-to-Leading Order calculations in conjunction with a power correction model to account for hadronisation. The model is tested by extracting the strong coupling constant alphas(Mz) and a new non-perturbative parameter, alpha0(muI).

• Item Type: Thesis (PhD)
• Qualification Level: Doctoral
• Additional Information: Adviser: Tony Doyle
• Keywords: High energy physics
• Date of Award: 2001
• Depositing User: Enlighten Team
• Unique ID: glathesis:2001-76163
• Copyright: Copyright of this thesis is held by the author.
• Date Deposited: 19 Dec 2019 09:15
• Last Modified: 19 Dec 2019 09:15
• URI: https://theses.gla.ac.uk/id/eprint/76163