Search for Exotic Higgs Boson Decays H → A A → 4γ with Events Containing Two Merged Diphotons in Proton-Proton Collisions at √s = 13 TeV
Abstract
We present the first direct search for exotic Higgs boson decays H → AA, A → γγ in events with two photonlike objects. The hypothetical particle A is a low-mass spin-0 particle decaying promptly to a merged diphoton reconstructed as a single photonlike object. We analyze the data collected by the CMS experiment at √s=13TeV corresponding to an integrated luminosity of 136 fb⁻¹. No excess above the estimated background is found. We set upper limits on the branching fraction B(H → AA → 4γ) of (0.9–3.3) × 10⁻³ at 95% confidence level for masses of A in the range 0.1–1.2 GeV. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000634654Publication status
publishedExternal links
Journal / series
Physical Review LettersVolume
Pages / Article No.
Publisher
American Physical SocietyOrganisational unit
03904 - Wallny, Rainer / Wallny, Rainer
03593 - Dissertori, Günther / Dissertori, Günther
09720 - de Cosa, Annapaola / de Cosa, Annapaola
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