The Higgs boson or Higgs particle is a proposed elementary particle in the Standard Model of particle physics. The Higgs boson is named after Peter Higgs who, along with others, proposed the mechanism that suggested such a particle in 1964. The existence of the Higgs boson and the associated Higgs field would be the simplest known method to explain why certain other elementary particles in the standard model have their mass. In this theory, an unseen field permeates space; this field has a non-zero value everywhere, even in its lowest energy state, and various other elementary particles obtain mass by interacting with this field. The Higgs boson—the smallest possible excitation of this field—is predicted to exist by the same theory, and has been the target of a long search in particle physics. One of the primary design goals of the Large Hadron Collider ("LHC") at CERN in Geneva, Switzerland—one of the most complicated scientific instruments ever built—was to test the existence of the Higgs boson and measure its properties, which would allow physicists to confirm this cornerstone of modern theory.