Event Shapes from JADE Data and Studies of Power Corrections

Abstract

Studies of event shape observables at PETRA and LEP energies are presented. Previously published determinations of the strong coupling constant α_s at \sqrt{s} = 35 and 44 GeV are complemented using new resummed QCD calculations for the C parameter and improved calculations for the jet broadening variables B_T and B_W which recently became available. Furthermore, recently predicted power corrections to the differential distributions of these observables are investigated. In this study, e^+e^- data between \sqrt{s} = 35 and 183 GeV are considered.

5 pages, uses espcrc2.sty (included) and epsfig.sty, LaTeX2e 8 .eps-files. Talk presented at the QCD98 Euroconference, Montpellier, France, July 2-8, 1998

References in corpus (7)

• Power Corrections to Event Shape Distributions
• On the QCD analysis of Jet Broadening
• On the universality of the Milan factor for 1/Q power corrections to jet shapes
• Resummed $C$-Parameter Distribution in $e^{+}{e}^{-}$ Annihilation
• Universality of 1/Q corrections to jet-shape observables rescued
• A Study of Event Shapes and Determinations of alpha_s using data of e^+e^- Annihilations at sqrt{s} = 22 to 44 GeV
• Combined QCD analysis of e^+ e^- data at sqrt(s) = 14 to 172 GeV

Cited by in corpus (2)

• Event shapes in e+e- annihilation and deep inelastic scattering
• Tests of analytical hadronisation models using event shape moments in {\epem} annihilation