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SIMUnet: an open-source tool for simultaneous global fits of EFT Wilson coefficients and PDFs

We present the open-source SIMUnet code, designed to fit Standard Model Effective Field Theory (SMEFT) Wilson coefficient alongside Parton Distribution Functions (PDFs) of the proton. SIMUnet can perform SMEFT global fits, as well as simultaneous fits of the PDFs and of an arbitrarily large number o...

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Main Authors: Costantini, Mark N. (Author) , Hammou, Elie (Author) , Kassabov, Zahari (Author) , Madigan, Maeve (Author) , Mantani, Luca (Author) , Morales-Alvarado, Manuel (Author) , Moore, James M. (Author) , Ubiali, M. (Author)
Format: Article (Journal)
Language:English
Published: 12 August 2024
In: The European physical journal. C, Particles and fields
Year: 2024, Volume: 84, Issue: 8, Pages: 1-25
ISSN:1434-6052
DOI:10.1140/epjc/s10052-024-13079-9
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1140/epjc/s10052-024-13079-9
Verlag, kostenfrei, Volltext: https://link.springer.com/article/10.1140/epjc/s10052-024-13079-9
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Author Notes:PBSP Collaboration, Mark N. Costantini, Elie Hammou, Zahari Kassabov, Maeve Madigan, Luca Mantani, Manuel Morales-Alvarado, James M. Moore, Maria Ubiali
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Summary:We present the open-source SIMUnet code, designed to fit Standard Model Effective Field Theory (SMEFT) Wilson coefficient alongside Parton Distribution Functions (PDFs) of the proton. SIMUnet can perform SMEFT global fits, as well as simultaneous fits of the PDFs and of an arbitrarily large number of SMEFT degrees of freedom, by including both PDF-dependent and PDF-independent observables. SIMUnet can also be used to determine whether the effects of any New Physics models can be fitted away in a global fit of PDFs. SIMUnet is built upon the open-source NNPDF code and is released together with documentation, and tutorials. To illustrate the functionalities of the new tool, we present a new global analysis of the SMEFT Wilson coefficients accounting for their interplay with the PDFs. We increment our previous analysis of the LHC Run II top quark data with both (i) the Higgs production and decay rates data from the LHC, and (ii) the precision electroweak and diboson measurements from LEP and the LHC.
Item Description:Gesehen am 10.03.2025
Online Veröffentlicht: 12. August 2024
Physical Description:Online Resource
ISSN:1434-6052
DOI:10.1140/epjc/s10052-024-13079-9

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