Fortunately there are not so many terms of this kind in the Standard Model case. :) However terms don't really cancel each other out. (I'm sure you could const

Fortunately there are not so many terms of this kind in the Standard Model case. :) However terms don't really cancel each other out. (I'm sure you could construct a scenario where that happens but that doesn't generalize.) It's part of the construction manual if you will to have only independent constants and terms.