Discovery of the Higgs Boson and a Search for Beyond the Standard Model Physics in ZZ Decays using the CMS Detector at the LHC.

摘要

A study of the pp to ZZ → ℓℓℓℓ final state is conducted using 19.6 inverse femtobarn of 8 TeV proton-proton collisions at the LHC using the CMS detector. The Standard Model pp → ZZ production cross section is measured to be 7.7+0.5-0.5&parl0;stat.&parr0; +0.6-0.5&parl0;sys.&parr0; ± 0.3(lumi) pb. Evidence of a new Higgs-like boson is observed with a significance of 6.1σ at 126 GeV. 95% confidence level upper limits are set on the neutral anomalous triple gauge couplings; -0.004 < fZ4 < 0.004, -0.005 < fg4 < 0.005, -0.004 < fZ5 < 0.004, and -0.005 < fg5 < 0.005.