Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2005-12-07
Eur.Phys.J.C46:343-356,2006
Physics
High Energy Physics
High Energy Physics - Experiment
24 pages, 7 figures, 3 tables
Scientific paper
10.1140/epjc/s2006-02493-x
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 thrust, jet broadening, jet mass and the C-parameter. 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 and analytical power law corrections, the latter accounting for non-perturbative hadronisation effects. The data clearly exhibit the running of the strong coupling alpha_s(Q) and are consistent with a universal power correction parameter alpha_0 for all event shape variables. A combined QCD fit using all event shape variables yields alpha_s(mZ) = 0.1198 \pm 0.0013 ^{+0.0056}_{-0.0043} and alpha_0 = 0.476 \pm 0.008 ^{+0.018} _{-0.059}.
No associations
LandOfFree
Measurement of Event Shape Variables in Deep-Inelastic Scattering at HERA does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Measurement of Event Shape Variables in Deep-Inelastic Scattering at HERA, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement of Event Shape Variables in Deep-Inelastic Scattering at HERA will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-428546