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

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Discussion Overview

The discussion revolves around the properties and roles of W bosons in relation to protons, particularly focusing on their mass and energy. Participants explore the confusion surrounding the mass of W bosons compared to the energy scale of protons and the nature of W bosons as virtual particles in processes like beta decay.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant expresses confusion about the mass of W bosons (80 GeV) compared to the energy of protons (~1 GeV) and questions whether the W boson's mass changes when it is inside a proton.
  • Another participant clarifies that W bosons are not components of protons and suggests a possible confusion with quarks.
  • A third participant explains that W bosons are virtual particles in beta decay, emphasizing that they do not satisfy the standard energy-momentum relation and can appear temporarily, which may contribute to the confusion regarding their role within protons.
  • A later reply acknowledges the confusion and admits to misunderstanding the role of W bosons in neutron decay, mistakenly thinking they were gluons.

Areas of Agreement / Disagreement

Participants do not reach a consensus; there are competing views regarding the nature of W bosons and their relationship to protons, with some clarifying misconceptions while others express ongoing confusion.

Contextual Notes

There are limitations in understanding the distinction between virtual and real particles, as well as the specific roles of W bosons versus quarks and gluons in particle interactions.

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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W bosons are not components of protons. Are you sure you're not confusing them with quarks?
 
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 E\dot t > \hbar/2, 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.
 

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