Report

PUBDB-2025-04882

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Updated projections for Higgs boson measurements using $H\to\gamma\gamma$, $Z\gamma$ and $\mu\mu$ decays and for the combined measurement of Higgs boson couplings with the ATLAS detector at the HL-LHC

ATLAS Collaboration (Collaboration author)DESY*

2025

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Please use a persistent id in citations: doi:10.3204/PUBDB-2025-04882

Report No.: ATL-PHYS-PUB-2025-014

Abstract: Updated estimates are presented of the expected precision for the Higgs boson measurements in the $H\to\gamma\gamma$, $Z\gamma$ and $\mu\mu$ final states with the ATLAS detector at the High Luminosity LHC. The measurements performed in the same final states using the full ATLAS Run 2 data are projected to integrated luminosities ranging from 1000 fb$^{-1}$ to 3000 fb$^{-1}$, at a centre-of-mass energy of 14 TeV. They are obtained in baseline, optimistic and conservative scenarios of systematic uncertainties. In addition, the latest ATLAS extrapolations of single Higgs-boson measurements in the baseline uncertainty scenario with 3000 fb$^{-1}$ are used in a joint interpretation to derive the expected uncertainties in the scale factors of various Higgs boson coupling strengths.

Keyword(s): HIGGS

Note: All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PUBNOTES/ATL-PHYS-PUB-2025-014. The authors list may be incomplete!

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Contributing Institute(s):

1. LHC/ATLAS Experiment (ATLAS)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)

Experiment(s):

1. LHC: ATLAS

Appears in the scientific report 2025

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