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Automation of next-to-leading order computations in QCD : The FKS subtraction

Frederix, Rikkert LU ; Frixione, Stefano ; Maltoni, Fabio and Stelzer, Tim (2009) In Journal of High Energy Physics 2009(10).
Abstract


We present the complete automation of the universal subtraction formalism proposed by Frixione, Kunszt, and Signer for the computation of any cross section at the next-to-leading order in QCD. Given a process, the only ingredient to be provided externally is the infrared- and ultraviolet-finite contribution of virtual origin. Our implementation, currently restricted to the case of e
+
e
-
collisions, is built upon and works in the same way as MadGraph. It is particularly suited to parallel computation, and it can deal with any physical process resulting... (More)


We present the complete automation of the universal subtraction formalism proposed by Frixione, Kunszt, and Signer for the computation of any cross section at the next-to-leading order in QCD. Given a process, the only ingredient to be provided externally is the infrared- and ultraviolet-finite contribution of virtual origin. Our implementation, currently restricted to the case of e
+
e
-
collisions, is built upon and works in the same way as MadGraph. It is particularly suited to parallel computation, and it can deal with any physical process resulting from a theory implemented in MadGraph, thus including the Standard Model as well as Beyond the Standard Model theories. We give results for some sample processes that document the performances of the implementation, and show in particular how the number of subtraction terms has an extremely mild growth with final-state multiplicity.

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author
; ; and
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Beyond standard model, Heavy quark physics, NLO computations, QCD
in
Journal of High Energy Physics
volume
2009
issue
10
article number
003
pages
58 pages
publisher
Springer
external identifiers
  • scopus:71449126885
ISSN
1029-8479
DOI
10.1088/1126-6708/2009/10/003
language
English
LU publication?
no
id
4bf476f4-6d8b-47ff-9cfc-c8ce685198e7
date added to LUP
2019-05-28 15:06:32
date last changed
2020-09-23 07:43:47
@article{4bf476f4-6d8b-47ff-9cfc-c8ce685198e7,
  abstract     = {<p><br>
                            We present the complete automation of the universal subtraction formalism proposed by Frixione, Kunszt, and Signer for the computation of any cross section at the next-to-leading order in QCD. Given a process, the only ingredient to be provided externally is the infrared- and ultraviolet-finite contribution of virtual origin. Our implementation, currently restricted to the case of e <br>
                            <sup>+</sup><br>
                            e <br>
                            <sup>-</sup><br>
                             collisions, is built upon and works in the same way as MadGraph. It is particularly suited to parallel computation, and it can deal with any physical process resulting from a theory implemented in MadGraph, thus including the Standard Model as well as Beyond the Standard Model theories. We give results for some sample processes that document the performances of the implementation, and show in particular how the number of subtraction terms has an extremely mild growth with final-state multiplicity.</p>},
  author       = {Frederix, Rikkert and Frixione, Stefano and Maltoni, Fabio and Stelzer, Tim},
  issn         = {1029-8479},
  language     = {eng},
  number       = {10},
  publisher    = {Springer},
  series       = {Journal of High Energy Physics},
  title        = {Automation of next-to-leading order computations in QCD : The FKS subtraction},
  url          = {http://dx.doi.org/10.1088/1126-6708/2009/10/003},
  doi          = {10.1088/1126-6708/2009/10/003},
  volume       = {2009},
  year         = {2009},
}