Three-jet event-shapes in lepton-proton scattering at next-to-leading order accuracy

Details Three-jet event-shapes in lepton-proton scattering at next-to-leading order accuracy Three-jet event-shapes in lepton-proton scattering at next-to-leading order accuracy

2005-11-29

arxiv.org/abs/hep-ph/0511328v2

Phys.Lett.B634:498-503,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 6 figures, minor modifications and corrections, version accepted for publication

Scientific paper

10.1016/j.physletb.2006.02.007

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.

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