![Thumbnail](/bitstream/handle/20.500.11850/65305/Gehrmann-DeRidder2013_Article_DoubleVirtualCorrectionsForGlu%282%29.pdf.jpg?sequence=7&isAllowed=y)
Open access
Date
2013-02Type
- Journal Article
ETH Bibliography
yes
Altmetrics
Abstract
We use the antenna subtraction method to isolate the double virtual infrared singularities present in gluonic scattering amplitudes at next-to-next-to-leading order. In previous papers, we derived the subtraction terms that rendered (a) the double real radiation tree-level process finite in the single and double unresolved regions of phase space and (b) the mixed single real radiation one-loop process both finite and well behaved in the unresolved regions of phase space. Here, we show how to construct the double virtual subtraction term using antenna functions with both initial- and final-state partons which remove the explicit infrared poles present in the two-loop amplitude. As an explicit example, we write down the subtraction term for the four-gluon two-loop process. The infrared poles are explicitly and locally cancelled in all regions of phase space leaving a finite remainder that can be safely evaluated numerically in four-dimensions. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000065305Publication status
publishedExternal links
Journal / series
Journal of High Energy PhysicsVolume
Pages / Article No.
Publisher
SpringerSubject
Jets; Hadronic CollidersOrganisational unit
03804 - Gehrmann DeRidder, Aude (SNF-Professur)
More
Show all metadata
ETH Bibliography
yes
Altmetrics