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Published March 27, 2025 | Version v1
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The $H\gamma$ final state at FCC-ee

  • 1. CERN
  • 2. Technische Universitat Munchen (DE)

Description

This work investigates the $H\gamma$ final state in collisions at the FCC-ee, housing an electron-positron collider. The events reconstruction is based on the IDEA detector concept.
The final state in question relies on loop-based production and provides insight in the effective $H\gamma\gamma$ and $H\gamma Z$ coupling. 
The presented analysis is based on the recoil mass method and does not apply an explicit Higgs selection. 
The final measurement precision is evaluated by a cut \& count analysis as well as a likelihood fit on the photon recoil mass. 
Both results are compatible with a precision of 228\% and 234\%, respectively.

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Additional details

Funding

European Commission
FCCIS - Future Circular Collider Innovation Study 951754

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