Karlsruhe 2024 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 23: Top physics 1

T 23.8: Vortrag

Montag, 4. März 2024, 17:45–18:00, Geb. 30.95: Audimax

Global EFT Fits using TopCPToolkit & FastFrames — Arnulf Quadt, Baptiste Ravina, and •Daniel Werner — II. Physikalisches Institut, Georg-August Universität Göttingen

The Effective Field Theory (EFT) is a promising approach in the search for physics beyond the Standard Model (BSM), without having to adhere to a specific BSM model. The top-electroweak sector (ttZ, ttW, ttH, etc.) is of particular interest to constrain a number of EFT operators, and a global fit to these processes is needed. This in turn requires reliable, robust and efficient analysis software.

With the prospect of rising luminosities in Run 3 and especially the high-luminosity LHC, new analysis frameworks are needed in the ATLAS collaboration with a stronger focus on reducing computing times and disk space usage. Saving disk space is achieved by introducing the common derivation format DAOD_PHYS for most Run 3 ATLAS analyses. For producing individual ntuples from this format, the framework TopCPToolkit was developed based on Combined Performance (CP) algorithms, and also featuring dedicated analysis tools that can be inherited from commonly used analysis tools.

Filling histograms with values derived from these ntuples is achieved through the newly developed framework FastFrames. This framework uses ROOT’s RDataFrames and improves the performance greatly, compared to previous workflows in the ATLAS Top working group.

This talk will focus on work of applying TopCPToolkit and FastFrames to produce ntuples and histograms to provide the basics for EFT fits of top+X processes in the framework of a Run 3 analysis.

Keywords: EFT; CP-Algorithms; RDataFrame; Run 3; DAOD_PHYS