Weak force vertex factor V - A

  • Thread starter a dull boy
  • Start date
  • #1
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Main Question or Discussion Point

Hi forum,

The weak force vertex factor is γu(1-γ5). Am I right that
the axial component only couples to left handed fermions? Does the vector component
couple to both left and right-handed fermions?

Thanks, Mark
 

Answers and Replies

  • #2
550
2
It's the combination of the two that only couples to left-handed fermions. On their own, the V coupling gives you something like R+L and the A coupling gives R-L, so V-A cancels the couplings to R and only leaves couplings to L.
 
  • #3
40
1
Thanks very much Parlyne, that was a very helpful answer.
 

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