Event Shapes and Power Corrections at HERA
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-par...
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| Format: | Dissertation |
| Language: | English |
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ProQuest Dissertations & Theses
01-01-2001
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| Online Access: | Get full text |
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| Summary: | 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 αs(Mz) and a new non-perturbative parameter, α0(μI). |
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| ISBN: | 9780438753235 0438753232 |