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FCC feasibility studies: Impact of tracker- and calorimeter-detector performance on jet flavor identification and Higgs physics analyses

Haider Abidi, Ketevi A. Assamagan, Diallo Boye, Elizabeth Brost, Viviana Cavaliere, Anna E. Connelly, George Iakovidis, Ang Li, Marc-André Pleier et al.

Michele Selvaggi

Andrea Sciandra*, Scott Snyder, Robert Szafron, Abraham Tishelman-Charny, and Iza Veliscek

  • CERN, Geneva, Switzerland

  • *Contact author: andrea.sciandra@cern.ch
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Phys. Rev. D 112, 052002 – Published 9 September, 2025

DOI: https://doi.org/10.1103/m2zr-26yf

Abstract

The ambitious physics program planned for the Future Circular Collider electron-positron phase imposes stringent constraints on detector performance. This study systematically investigates how different detector configurations impact jet flavor identification and their effects on high-profile physics analyses. Using Higgs boson coupling measurements and searches for invisible Higgs decays as benchmarks, we evaluate the sensitivity of these analyses to variations in tracker and calorimeter detector properties. We examine modifications to single-point resolution, material budget, silicon layer placement, and particle identification capabilities, quantifying their effects on flavor-tagging performance. Additionally, we present the first comprehensive study of Higgs-to-invisible decay detection using full detector simulation, providing insights for optimizing detector designs at lepton colliders.

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Phys. Rev. D 112, 052002– Published 9 September, 2025
  • Received 15 April 2025
  • Accepted 28 July 2025
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