[Physics Briefing] Beyond any doubt: Higgs boson couples to the heaviest lepton

A decisive property of the Higgs boson is its affinity to mass. The heavier a particle is, the stronger the Higgs boson will couple to it. While physicists have firmly established this property for heavy W and Z bosons (force carriers), more data are needed to measure the Higgs boson coupling to the heavy fermions (matter particles)...

Full briefing: http://atlas.cern/updates/physics-briefing/higgs-couples-heaviest-lepton