Editing ATLAS experiment (section)

====Precision measurements====
With the important exception of the [[Higgs boson]], detected by the ATLAS and the [[Compact Muon Solenoid|CMS]] experiments in 2012,<ref name="Higgs2015" /> all of the particles predicted by the [[Standard Model]] had been observed by previous experiments. In this field, in addition to the discovery of the [[Higgs boson]], the experimental work of ATLAS has focused on precision measurements, aimed at determining with ever greater accuracy the many physical parameters of theory.
In particular for
* the [[Higgs boson]];
* [[W and Z bosons]];
* the [[top quark|top]] and [[bottom quark|bottom]] quarks
ATLAS measures:
* [[mass]]es;
* channels of production, decay and [[Exponential decay#Mean lifetime|mean lifetimes]];
* interaction mechanisms and [[coupling constant]]s for [[Electroweak interaction|electroweak]] and [[strong interaction]]s.

For example, the data collected by ATLAS made it possible in 2018 to measure the mass [(80,370±19) [[Electronvolt|MeV]]] of the [[W boson]], one of the two mediators of the [[electroweak interaction|weak interaction]], with a [[measurement uncertainty]] of ±2.4[[Per mille|‰]].