| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10721882 | Physics Letters B | 2011 | 8 Pages |
Abstract
Jet broadening is an event-shape variable probing the transverse momenta of particles inside jets. It has been measured precisely in e+eâ annihilations and is used to extract the strong coupling constant. The factorization of the associated cross section at small values of the broadening is afflicted by a collinear anomaly. Based on an analysis of this anomaly, we present an all-order factorization theorem for jet-broadening distributions, which is free of large perturbative logarithms in the two-jet limit. Our formula reproduces known results at next-to-leading logarithmic order but also extends to higher orders.
Related Topics
Physical Sciences and Engineering
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Nuclear and High Energy Physics
Authors
Thomas Becher, Guido Bell, Matthias Neubert,