Speaker
Zebing Wang
Description
A search for the exotic decay of the Higgs boson to a Z boson and a light pseudoscalar particle, decaying, respectively, to two leptons and two photons, is presented. The search is based on proton-proton collision data at a center-of-mass energy of sqrt(s) = 13 TeV, collected by the CMS detector and corresponding to an integrated luminosity of 138 fb-1. The analysis probes pseudoscalar masses m_a between 1 and 30 GeV, leading to two pairs of well-isolated leptons and photons. Upper limits at 95% confidence level are set on the product of the Higgs boson production cross section and its branching to two leptons and two photons. Limits on axion-like particle models are also reported.
