# X boson

> charged massive gauge boson of charge ±1⅓𝑒 in grand unified theories mediating proton decay

**Wikidata**: [Q77839715](https://www.wikidata.org/wiki/Q77839715)  
**Source**: https://4ort.xyz/entity/x-boson


## References

1. [Source](https://www.britannica.com/science/X-boson)