Question

higgs boson is a true elementary particle or not

Answer 1

The Higgs boson is an elementary particle in the Standard Model of particle physics. It is the quantum excitation of the Higgs field,a fundamental field of crucial importance to particle physics theory first suspected to exist in the 1960s. Unlike other known fields such as the electromagnetic field, it has a non-zero constant value in vacuum. The question of the Higgs field's existence became the last unverified part of the Standard Model of particle physics, and for several decades was considered "the central problem in particle physics".