  The observation of a new particle in the search for the Standard Model (SM)
Higgs boson at the LHC, reported by the ATLAS and CMS collaborations, is a
milestone in the quest to understand electroweak symmetry breaking. The
evidence at the level of 5 $\sigma$ for a Higgs boson-like particle has been
published by both experiments after a preliminary analysis of the data from the
LHC Run-I. Precision measurements of the new particle are of critical
importance. This document reviews the mass and spin measurement, the couplings
scale factor measurements and the limits on new physics derived from these
results.
