The talk summarizes the physics results on the Higgs boson in the ZZ decay channel obtained by the CMS experiment at the LHC. Since the discovery of a Higgs boson, a broad range of properties of the Higgs boson are measured with the best precision throught this final state, including the mass, width, production and decay couplings and anomalous couplings with vector bosons. The channel also provides probes for new physics through the search for additional Higgs bosons.

Dr. Meng Xiao received bachelor and master degrees from Nanjing University in 2009 and 2010, then she received Ph.Dfrom CEA Saclay, France in 2013. She did Ph.D thesis in the ATLAS experiment, and later joined CMS as a postdoc at the John Hopkins University. She has been involved in the Higgs analysis from the discovery to the property measurements.She is currently the convener of the CMS Higgs to ZZ physics analysis group (2017-), the LHC Higgs cross section workinggroup, offshell sub-group (2016-), and was the convener of the CMS tracker detector alignment group in 2016.