What is the Value of Fermi's Constant (GF) in SI Units?

[randa177]

what is the value of fermi's constant ( GF ) in SI units?
I tried to work it out, but it seems that I'm wrong, I got a value of: 6.5 X 10(41) J(-2)

Does it make sense?

 

[Norman]

Google calculator gives:

$$G_F = 4.54376275 \times 10^{14} J^{-2}$$

where

$$\frac{G_F}{(\hbar c)^3} = 1.16637 \times 10^{-5} GeV^{-2}$$

I used the following code in Google:

1.16637*10^-5 (GeV)^-2 in (Joules)^-2

 

[randa177]

so, you mean Gf / (h.bar X c) ^ 3 = 4.5 X 10 (14),,, [ not the Gf itself] right?

 

[randa177]

how to get it in cgs units,,, I don't know how to use google to convert the units!

 

[pam]

If you know it in Joules, just convert Joules to ergs.
You can do it in your head if google fails you.

 

[anawazus]

what is then Gf2=5.29 * 10-38 cm2/GeV2?