21–25 Oct 2024
CERN
Europe/Zurich timezone

Explaining the 152 GeV di-photon excesses at the LHC via associated production

21 Oct 2024, 16:40
20m
503/1-001 - Council Chamber (CERN)

503/1-001 - Council Chamber

CERN

162
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Speaker

Guglielmo Coloretti (University of Zurich (UZH) / Paul Scherrer Institute (PSI))

Description

Recently, statistically significant excesses have been observed at the LHC in associated di-photon production (γγ + X) at around 152 GeV in the sidebands of SM Higgs analyses. They are most pronounced in the single-tau, missing-transverse-energy, four-jet and ⩾ 1ℓ+ ⩾ 1b-jet channels and compatible with associated production mechanisms for new Higgs bosons (such as Drell-Yan), leading to a significance of ≈ 4σ.
In this context, I will argue how such excesses can be explained within different new physics scenarios.

Author

Guglielmo Coloretti (University of Zurich (UZH) / Paul Scherrer Institute (PSI))

Presentation materials