Three-jet event-shapes in lepton-proton scattering at next-to-leading order accuracy
Abstract
Description
We compute the differential distributions of two three-jet event-shape observables at the next-to-leading order accuracy at fixed values of the DIS kinematic variables. The observable $\Kout$ measures the out-of-event-plane momentum. The other observable $y_3$ is the maximum value of the $\ycut$ resolution variable for which an event is classified as three-jet event. We also show the dependence of the fixed-order predictions on the renormalisation and factorisation scales. The radiative corrections are in general large and depend on the value of the DIS kinematic range.
11 pages, 6 figures, minor modifications and corrections, version accepted for publication
11 pages, 6 figures, minor modifications and corrections, version accepted for publication