Unsafe but calculable: ratios of angularities in perturbative QCD

Infrared- and collinear-safe (IRC-safe) observables have finite cross sections to each fixed-order in perturbative QCD. Generically, ratios of IRC-safe observables are themselves not IRC safe and do not have a valid fixed-order expansion. Nevertheless, in this paper we present an explicit method to...

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Bibliographic Details
Main Authors: Thaler, Jesse, Larkoski, Andrew
Other Authors: Massachusetts Institute of Technology. Center for Theoretical Physics
Format: Article
Language:en_US
Published: Springer-Verlag 2014
Online Access:http://hdl.handle.net/1721.1/88561
https://orcid.org/0000-0002-3181-4301
https://orcid.org/0000-0002-2406-8160