fundamental? The modern atom model The scale of the atom What are we looking for? The standard model The standard model quiz
Easy to Detect when Higgs decays to Z + Z Z bosons also have several decay modes, including Z → e+ + e- and Z → µ+ + µ- The Z + Z decay mode is quite easy for the ATLAS and CMS experiments to detect when both the Z bosons decay into one of these two modes (Z → e+ e- or Z → µ+ µ- ). Then the four observed decay modes of the Higgs boson are:
![]() The end result is that one will sometimes see (in addition to some unrelated particles) four muons, or, four electrons, or two muons and two electrons.
![]() Both the Higgs and Z bosons decay in a tiny fraction of a second, so we only see these electrons and muons (e+ e- µ+ µ-) with a combined mass of about 125 GeV. ![]() This photo shows a neon sign of an actual event recorded by the ATLAS detector in which four muons (shown in neon) were produced. The other particles are shown in the background. -- © LBNL |