Particle collision/interaction

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Discussion Overview

The discussion revolves around particle interactions within atoms, specifically focusing on fermion interactions, their spin and charge, and the implications of these interactions on energy levels. Participants explore concepts related to the Lamb Shift, fermion-boson interactions, and the nature of collisions at the quantum level.

Discussion Character

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

Main Points Raised

  • Some participants inquire whether particle interactions can affect fermion spin or charge without structural changes to the fermions.
  • There is mention of the Lamb Shift as an example of fermion-boson interaction, but some participants clarify that they are interested in fermion-fermion interactions specifically.
  • Questions are raised about which fermions are involved in specific interactions, particularly regarding up quarks and down quarks within protons and neutrons.
  • One participant suggests that the W and Z bosons, which have mass, are responsible for mediating forces between fermions, while others question the nature of collisions involving massless photons.
  • Concerns are expressed about the definition of "collision" in the context of quantum particles, with analogies drawn to macroscopic objects.
  • Some participants express uncertainty about the nature of fermion interactions and whether they can influence each other without changing their structure or mass.
  • Clarifications are made regarding the properties of gluons and photons, with one participant admitting to confusion between the two.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the nature of fermion interactions or the specifics of how these interactions occur. Multiple competing views and uncertainties remain throughout the discussion.

Contextual Notes

Participants express varying levels of understanding regarding particle physics concepts, and there are indications of missing assumptions or definitions related to the interactions being discussed.

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Within the atom can particle interaction cause an exchange affecting the fermions spin/charge without invoking structural change in the fermions? If so could the eV temporarily change if the spin is affected?
Thanks TM
 
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threadmark said:
Within the atom can particle interaction cause an exchange affecting the fermions spin/charge without invoking structural change in the fermions? If so could the eV temporarily change if the spin is affected?
Thanks TM

which fermions? the neutrons? protons? electrons?

there is at least spin coupling within the atom, the so called Lamb Shift

http://en.wikipedia.org/wiki/Lamb_shift

you should try to have better titles for your questions in the future
 
The lamb shift in this article is describing the influence on the electron, the electron is a fermion but this is a fermion boson interaction. This is not a collision/interaction between fermions. I want to know fermion fermion interaction. The fermions in protons and neutrons are up quarks and down quarks. is there any exchange/influence occurring between fermions?
Thanks TM
 
threadmark said:
The lamb shift in this article is describing the influence on the electron, the electron is a fermion but this is a fermion boson interaction. This is not a collision/interaction between fermions. I want to know fermion fermion interaction. The fermions in protons and neutrons are up quarks and down quarks. is there any exchange/influence occurring between fermions?
Thanks TM


no it is a fermion - fermion interaction mediated with a boson (the photon)

are u wondering if there are fermions which carry "force"?
 
If so what two fermions are interacting in this formula, the electron is one fermion where is the other? W and Z bosons have a Mass so the force that acts on the fermions from the elec and magnetic field is the W boson because it carries a different charge to the y,g,z so the affect is the W boson cannot occupy the same quantum state. Fermions can create fields but are not apart of the field.
 
Please correct me if I am wrong
 
the electron before the photon "hits" it (of course this photon will be virtual in the lamb shift) then after the "interaction" there is one electron, but with spin changed.

I still have no clue what you actually are asking about
 
If a photon has zero charge and zero mass how does it “collide” with the electron? I know of electrons emitting photons. They possesses chromo dynamic energy but no charge so where does this collision occur. If I throw a ball through a hoop and it doesn’t touch the sides, its not a collision. But if I throw it so fast it was to act upon the hoop as it passed through this is still not a collision. The force/energy transferred to the hoop was because of the ball affecting the wind pressure not the hoop directly.
To sum this up the photon is not the force medium between the boson fermion interaction in the field. It is the W and Z bosons. But what I want to know is fermion-fermion interactions.
Is there an influence to a fermion if a different fermion or the same type of fermion was to pass very close to affect the state of the fermion but not change the structure its apart of? Can there be fluctuations in mass due to this interaction?
 
no they do not possesses chromodynamic energy...

NO elementary particle "collides" as two balls colliding, elementary particles have no size at all.

where did u learn particle physics?
 
  • #10
got the gluon and photon mixed up. sorry. at work at the mo,so a bit distracted.
TM
 

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