Title
NGluon: A package to calculate one-loop multi-gluon amplitudes
Abstract
We present a computer library for the numerical evaluation of colour-ordered n-gluon amplitudes at one-loop order in pure Yang–Mills theory. The library uses the recently developed technique of generalised unitarity. Running in double precision the library yields reliable results for up to 14 gluons with only a small fraction of events requiring a re-evaluation using extended floating point arithmetic. We believe that the library presented here provides an important contribution to future LHC phenomenology. The program may also prove useful in cross checking results obtained by other methods. In addition, the code provides a sample implementation which may serve as a starting point for further developments.
Year
DOI
Venue
2011
10.1016/j.cpc.2011.04.008
Computer Physics Communications
Keywords
Field
DocType
Unitarity method,One-loop corrections
Quantum chromodynamics,Byte,Floating point,Computer science,Double-precision floating-point format,Algorithm,Unitarity,Compiler,Test data,Recursion
Journal
Volume
Issue
ISSN
182
8
0010-4655
Citations 
PageRank 
References 
5
0.77
0
Authors
3
Name
Order
Citations
PageRank
S. Badger150.77
B. Biedermann250.77
P. Uwer3214.22