Confused About W Bosons: Mass/Energy Inside and Outside Proton?

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Qconfused
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need help, I'm reading that W bosons are 80 GeV, but they are components of protons of ~1 GEV. Makes no sense. Is the 80 GeV the mass/energy of the particle if it is outside the proton? If so what is the mass/energy as a transfer particle within the proton. If you subtract the mass of the quarks from 1GeV is the remaining energy the sum of the energy of the bosons?
 
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He might think that by looking at pictures of beta decay, where a VIRTUAL W-boson carries the weak force and couples it between an electron and a neutrino.

He might think that the W-boson preexists as a component of the proton. But that is not how it is really. The W boson is for the first a virtual particle, so it does not satisfy E^2 = p^2 +m^2, secondly energy conservation CAN be violated, but only for a short time. We have that [tex]E\dot t > \hbar/2[/tex], so it is ok for the W boson to just come from "nowere" to "do its job" by chaning the proton to a neutron and creating an electron and a neutrino.
 
Thank you malawi, you hit my lapse on several fronts. I was reading about neutron decay to proton with ejection of W- and got to thinking that W- was the boson (gluon) exchange particle. total confusion.