CMS precisely measures the mass of the Higgs boson

Categories: CMS/LHC, Energy Frontier
Published on: November 13, 2019
Event in which a candidate Standard Model Higgs boson decays into two photons indicated by the green towers representing energy deposited in the electromagnetic calorimeter.

Tthe CMS Collaboration has 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).

By the CMS Collaboration. You can read this article at the CERN web site.

Comments are closed.

Welcome , today is Monday, December 16, 2019