From Fermilab Today: “CMS Result – Would the real Higgs boson please stand up?”
Fermilab is an enduring source of strength for the US contribution to scientific research world wide.
Friday, July 20, 2012
“After decades of speculation, the Higgs boson was finally discovered on the fourth of July, 2012 – or was it? Despite the headlines, scientists claimed to have seen not a Higgs boson, but “a new particle” or “a new boson.” As it often happens in science, the eureka moment is an explosion of more questions than answers.
Higgs image from ATLAS
Higgs image from CMS
What the experiments actually revealed was an excess of certain types of events. More collisions produced pairs of photons, pairs of Z bosons or pairs of W bosons than would be expected in a world without a Higgs. The photon and the Z boson measurements were precise enough to show that they came from decays of a single particle with a mass of approximately 125 GeV (heavier than all known particles except the top quark). The photon, Z and W are all bosons, which are particles of force, as contrasted with fermions, which are particles of matter. Fermions attract or repel each other by tossing and catching bosons.”
See the full and well articulated article here.