Difference between revisions of "One-loop provider"
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== Use from other software == | == Use from other software == | ||
The following event generators use or support the use of external one-loop providers: | The following event generators use or support the use of external one-loop providers: | ||
| − | * [[Herwig | + | * [[Herwig]] 7<ref>The Herwig Collaboration: [http://herwig.hepforge.org/tutorials/installation/prerequisite.html#external-amplitude-providers Herwig 7 installation notes]</ref> |
* [[Sherpa]]<ref>Sherpa contributors: [http://sherpa.hepforge.org/doc/SHERPA-MC-2.2.0.html#External-one_002dloop-ME Sherpa 2.2.0 online manual]</ref> | * [[Sherpa]]<ref>Sherpa contributors: [http://sherpa.hepforge.org/doc/SHERPA-MC-2.2.0.html#External-one_002dloop-ME Sherpa 2.2.0 online manual]</ref> | ||
== References == | == References == | ||
<references /> | <references /> | ||
Revision as of 14:54, 6 April 2017
A one-loop provider (or one-loop program) is a specialised software for generating one-loop amplitudes for perturbative quantum field theory calculations. They are a special case of external amplitude providers. One-loop amplitudes contribute to next-to-leading order (and higher order) cross sections as well as the leading-order cross sections of loop-induced processes. Most one-loop providers can also compute other amplitudes, but their strength lies in loop amplitudes, which are typically much harder to compute than tree-level amplitudes.
One-loop providers are often used as external software to provide one-loop amplitudes for event generators.
List of one-loop providers
Use from other software
The following event generators use or support the use of external one-loop providers:
References
- ↑ The Herwig Collaboration: Herwig 7 installation notes
- ↑ Sherpa contributors: Sherpa 2.2.0 online manual
