Coupling constants are unitized or unitless. Forces are associated to unitized coupling constants like charge (e), gravity (G), etc. All unitless coupling constants that I know of, like the fine structure constant ([tex]\alpha[/tex]), or the Lorentzian [tex]\beta[/tex], etc are ratios where the units cancel out.(adsbygoogle = window.adsbygoogle || []).push({});

As the weak coupling constant is unitless;

Does this mean it is a ratio of forces like the fine structure constant? If not why not.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Unitless constants and unitized forces

**Physics Forums | Science Articles, Homework Help, Discussion**