W′ and Z′ bosons
| Composition | Elementary particle | 
|---|---|
| Statistics | Bosonic | 
| Family | Gauge boson | 
| Interactions | Standard-Model Extension | 
| Status | Hypothetical | 
| Mass | unknown | 
| Decays into | similar to W and Z bosons | 
| Electric charge | W′: ±1 e Z′: 0 e  | 
| Spin | 1 | 
| Spin states | 2 | 
In particle physics, W′ and Z′ bosons (or W-prime and Z-prime bosons) refer to hypothetical gauge bosons that arise from extensions of the electroweak symmetry of the Standard Model. They are named in analogy with the Standard Model W and Z bosons.