GeV

gigaelectron volt

Energyexact by definition

The gigaelectronvolt is 10⁹ electronvolts, exactly 1.602176634 × 10⁻¹⁰ joules, exact since the 2019 SI fixed the elementary charge. It is the natural unit of particle physics masses: the proton is 0.938 GeV/c², the Higgs boson 125 GeV/c², and the top quark about 173.

1 GeV 1.6021766e-10 J