Limits on an Exotic Higgs Decay From a Recast ATLAS Four-Lepton Analysis

2024/12/19 by Junyi Cheng, R. Husain, Cheng, Junyi +5
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Particle Detector Development and Performance #Particle physics theoretical and experimental studies

paper · pdf · doi:10.48550/arxiv.2412.14452

openalex publication_date 2024/12/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

The ATLAS collaboration, using 139 fb^-1 of 13 TeV collisions from the Large Hadron Collider, has placed limits on the decay of a Z boson to three dark photons. We reproduce the results of the ATLAS analysis, and then recast it as a limit on a exotic Higgs decay mode, in which the Higgs boson decays via a pair of intermediate (pseudo)scalars a to four dark photons V (or some other spin-one meson). Across the mass range for m_a and m_V, we find limits on the exotic Higgs branching fraction BR(H→ aa → VVVV) in the range of 4× 10^-5 to 1 × 10^-4.

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