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UFO 2.0: the ‘Universal Feynman Output’ format
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Journal Article
UFO 2.0: the ‘Universal Feynman Output’ format
2023
Overview
We present an update of the
Universal FeynRules Output
model format, commonly known as the UFO format, that is used by several automated matrix-element generators and high-energy physics software. We detail different features that have been proposed as extensions of the initial format during the last ten years, and collect them in the current second version of the model format that we coin the
Universal Feynman Output
format. Following the initial philosophy of the UFO, they consist of flexible and modular additions to address particle decays, custom propagators, form factors, the renormalisation group running of parameters and masses, and higher-order quantum corrections.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V,Springer Verlag (Germany),Springer Nature,SpringerOpen
