http://cms.cern/news/cms-precisely-measures-mass-higgs-boson
One important goal was to determine the mass of the Higgs Boson precisely, and the CMS Collaboration have just announced the most precise measurement of the Higgs boson’s mass achieved so far. CMS physicists recently measured the mass of the Higgs boson to be 125.35 GeV with a precision of 0.15 GeV, an uncertainty of roughly 0.1%! This very high precision was achieved thanks to the enormous amount of work spent over many years to carefully calibrate and model the CMS detector when it measures the particles necessary for this measurement (electrons, muons, and photons).
The new result is based on data collected at the Large Hadron Collider at CERN between 2011 and 2016. To get this result, CMS physicists combined data from two very different, very accurate measurements. One measurement looked at decays to two Z bosons, which subsequently decay into electron or muon pairs, and the other focused on decays to two photons
One important goal was to determine the mass of the Higgs Boson precisely, and the CMS Collaboration have just announced the most precise measurement of the Higgs boson’s mass achieved so far. CMS physicists recently measured the mass of the Higgs boson to be 125.35 GeV with a precision of 0.15 GeV, an uncertainty of roughly 0.1%! This very high precision was achieved thanks to the enormous amount of work spent over many years to carefully calibrate and model the CMS detector when it measures the particles necessary for this measurement (electrons, muons, and photons).
The new result is based on data collected at the Large Hadron Collider at CERN between 2011 and 2016. To get this result, CMS physicists combined data from two very different, very accurate measurements. One measurement looked at decays to two Z bosons, which subsequently decay into electron or muon pairs, and the other focused on decays to two photons
