1997/04/30 by Yuri L. Dokshitzer, Yu. L. Dokshitzer, B.R. Webber +1 · 10 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1016/s0370-2693(97)00573-x
published as Phys.Lett. B404 (1997) 321-327 · 11 pages, LaTeX, 2 figures; further reference to related work by Korchemsky and Sterman added 30/4/97
arxiv created 1997/04/30 · openalex publication_date 1997/07/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We estimate the effects of non-perturbative physics on the differential distributions of infrared- and collinear-safe e+e- event shape variables, by extending the notion of an infrared-regular effective strong coupling, which accounts for the non-perturbative corrections to the mean values of several shape variables, to their distributions. This leads to 1/Q power corrections over a range of values of the shape variables considered, where Q is the centre-of-mass energy. In the case of the thrust variable, the leading correction is simply a shift of the distribution, by an amount proportional to 1/Q. We show that this gives an excellent description of the data throughout a wide range of T and Q.