Search for Exotic Higgs Boson Decays H→AA→4γ with Events Containing Two Merged Diphotons in Proton-Proton Collisions at √s=13  TeV

Physical Review Letters 2023
Kārlis Dreimanis, Antra Gaile, Andris Potrebko, Markus Seidel, Toms Torims, Viesturs Veckalns, CMS Collaboration

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=13  TeV 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.

DOI
10.1103/PhysRevLett.131.101801
Hyperlink
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.131.101801

The CMS Collaboration, A.Tumasyan, K.Dreimanis, A.Gaile, A.Potrebko, M.Seidel, T.Torims, V.Veckalns ... [et al.]. Search for Exotic Higgs Boson Decays H→AA→4γ with Events Containing Two Merged Diphotons in Proton-Proton Collisions at √s=13  TeV. Physical Review Letters, 2023, Vol. 131, No. 10, Article number 101801. ISSN 0031-9007. e-ISSN 1079-7114. Available from: doi:10.1103/PhysRevLett.131.101801

Publication language
English (en)