# Tag Info

### Is the mass of the $Z$ due to mixing with the photon "precursor" $B$ or to interaction with the Higgs?

To summarise: It is correct that the photon and the $Z$ boson are linear combinations of $W^0$ and $B$. The $Z^0$ (and the $W\pm$) get their mass via the Higgs mechanism, i.e. the vacuum expactation ...
• 3,649

### Can we derive the formula $Q=I_3+\frac{1}{2}(B+S)$ instead of accepting it as an empirical relation?

If you take pure QCD with massless $u$, $d$ and $s$ quarks, hadrons form multiplets of $U(3)$. This means that they can be characterized by three quantum numbers that are the eigenvalues of the three ...
• 1,964

### How is it possible for $W$-boson to be so heavy when neutron and proton have similar mass?

I know that in a beta decay a neutron turns into a proton and a W-boson. The mistake is in the last words "and a W-Boson". The correct statement is "a virtual W-boson". I know ...
• 222k