Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Is it a coincidence that the mass of the Higgs boson is exactly half the electroweak energy scale?

share|cite|improve this question
Hi Maura, and welcome to Physics Stack Exchange! We prefer that each separate question should be asked on its own, so I removed the extra thing you were asking about the Higgs and its antiparticle. Feel free to post that as a separate question (if it hasn't been asked on the site already). – David Z Mar 25 '13 at 19:05

It's not exactly half. The physical Higgs mass is something around 125 or 126 GeV, but the EW scale is a little less than twice that.

There is a relationship of sorts between the two values, though: the Higgs field $\phi$ is subject to a potential of the form

$$V(\phi) = \mu^2\lvert\phi\rvert^2 + \lambda\lvert\phi\rvert^4$$

Given this potential, the bare mass of the Higgs boson will be $\mu$ and the electroweak energy scale is $\sqrt{-\frac{\mu^2}{\lambda}}$. The relationship depends on the constant $\lambda$.

share|cite|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.