the L, on 04 July 2012 - 10:41 PM, said:

Im failed to understand what they discovered. Can you explain it. Seems that you understand it.

The basic theory is (as I understand it):

- There are 4 fundamental forces in our Universe as we know it: gravity, electromagnetism, weak nuclear force, and strong nuclear force.

- In quantum field theory each force is associated with one or a collection of bosons: gravitons, photons, (Z,W bosons), gluons.

- We believe that all 4 fundamental forces are actually related at some level (a ``grand unified theory'')

- We can see a connection between electromagetism and weak nuclear force, i.e. they appear to be low-energy manifestations of a more general ``electroweak'' force

- BUT the photon has no mass, and the Z,W bosons do have mass. Why are they different?

- Higgs (and several others) came up with this explanation: there is an additional force (or quantum field) that couples with the electroweak force. This predicts (via a complicated process) the bosons in electroweak force should turn into 1 massless and 3 massive bosons in the low energy (broken symmetry) version.

- This looks good: we already know about the weak nuclear force with 3 massive bosons (W
^{+}, W^{-}, and Z).

- If there is this ``Higgs force'' (or Higgs field), it should also have a boson associated with it - the remaining 1 massless boson from the previous point.

- If we can find this boson, then this is a proof that the electroweak force is real and why some bosons have mass.

Strictly speaking, finding the Higgs boson (which needs to be zero spin, massless, and have a fairly high energy) only proves the electroweak field is valid, and explains why the weak nuclear force bosons have mass.

The Higgs field can help explain why fermions (like electrons, quarks, etc.) also have mass but there is more than one possible way this could happen. In order to prove that the Higgs boson is responsible for

*all* mass they also need to quantify the coupling parameters to the fermion field.

It should also be noted that the Higgs field offers

**no** insight into gravity

**what-so-ever**.