Right handed particles and SU(2)L gauge invariance

[alemsalem]

If only left handed fields couple in the weak force, and we can boost to a frame that changes left handed fields to right handed ones, how can that theory be relativistically invariant?

thanks for the help!

 

[Vanadium 50]

Left-handed refers to chirality, not helicity.

 

[naima]

I read that chirality cannot be measured because it does not commute with H.
It seems strange to say that it is left only because it interacts.
Can you elaborate?