Measurement and QCD analysis of event shape variables in deep-ineleastic electron-proton collisions at HERA

Deep-inelastic ep scattering data, taken with the H1 detector at HERA and corresponding to an integrated luminosity of 106 pb^-1 are used to study the differential distributions of event shape variables. These include two-jet event shapes (thrust, jet broadening, jet mass and the C-parameter), as well as three-jet event shapes (out-of-event-plane momentum and azimuthal correlation) and jet rates. The four-momentum transfer Q is taken to be the relevant energy scale and ranges between 14 GeV and 200 GeV. The event shape distributions are compared with perturbative QCD predictions, which include resummed contributions for many of the observables. Power law corrections are applied to the predictions to account for hadronisation effects. A QCD fit is presented for the two-jet event shapes and consistent results are found for the strong coupling constant alpha_s and the non-perturbative parameter alpha_0.

Grantor dc:publisher

Publikationsserver der RWTH Aachen University

Year dc:date

2004

Author dc:creator

• Kluge, Thomas

Contributors dc:contributor

• Berger, Christoph

• info:eu-repo/classification/ddc/530
• Elektron-Proton-Streuung
• Tiefinelastische Streuung
• H1 <Teilchendetektor>
• Physik

Statement dc:rights

• info:eu-repo/semantics/openAccess

Language dc:language

eng

Identifier

https://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-121324%22

OAI identifier oai:identifier

oai:publications.rwth-aachen.de:59545