QCD analysis of D-parameter in near-to-planar three-jet events | Zendy

Andrea Banfi | Zendy; Giuseppe Marchesini | Zendy; Yuri L. Dokshitzer | Zendy; Giulia Zanderighi | Zendy

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QCD analysis of D-parameter in near-to-planar three-jet events

Author(s) -

Andrea Banfi,

Giuseppe Marchesini,

Yuri L. Dokshitzer,

Giulia Zanderighi

Publication year - 2001

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2001/05/040

Subject(s) - annihilation , physics , jet (fluid) , hadron , particle physics , observable , perturbative qcd , quantum chromodynamics , planar , distribution (mathematics) , order (exchange) , non perturbative , statistical physics , mathematics , quantum mechanics , computer science , mathematical analysis , mechanics , computer graphics (images) , finance , economics

We present the QCD analysis of D-parameter distribution in near-to-planar3-jet e+e- annihilation events. We derive the all-order resummed perturbativeprediction and the leading power suppressed non-perturbative corrections bothto the mean value and the distribution. Here non-perturbative corrections arelarger than in 2-jet shape observables, so that higher order non-perturbativeeffects could be relevant. Experimental data (not yet available) are needed inorder to cast light on this important point. The technique we develop aims atimproving the accuracy of the theoretical description of multi-jet ensembles,in particular in hadron-hadron collisions.Comment: 26 pages, 6 figures, JHEP class include

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