# Tag Info

## Carrier bosons

The weak force is mediated by the exchange of three massive bosons: $W^{\pm}$ (mass about 80.4 GeV) and $Z^0$ (mass 91.2 GeV).

## Conservation laws

Uniquely among the known forces the weak interaction violates flavor conservation in both the quark and lepton sectors, violates parity in purely leptonic interaction and violates charge-parity in some hadronic decay channels.