国際リニアコライダー
The heaviest particle pairs yet produced by electron–positron annihilation in particle accelerators are – pairs (mass 80.385 GeV/c2 × 2). The heaviest single-charged particle is the Z boson (mass 91.188 GeV/c2). The driving motivation for constructing the International Linear Collider is to produce the Higgs bosons (mass 125.09 GeV/c2) in this way.