| Type | Proton (R0) static | Neutron (R0) static | Electron (R0) static | Electron (R0) 20 Gev | Electron (R0) 60 Gev |
| Theoretical value | 0.2 × 10−15 m | 0.2 × 10−15 m | 3.8 × 10−11 cm | 0.9 × 10−15 cm | 3.1 × 10−16 cm |
| Experimental value | 1.1 × 10−15 m | 1.1 × 10−15 m | Same order | <10−15 cm | <10−16 cm |