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talanum52
- 19
- 3
- Homework Statement
- pi- =W-?
- Relevant Equations
- pi- = W- ?
They decay to identical particles but are they identical?
Can you list the properties of each of these particles?talanum52 said:Homework Statement:: pi- =W-?
Relevant Equations:: pi- = W- ?
They decay to identical particles but are they identical?
They don't have the same mass and spin. Because they decay to the same particles, there must be additional particles in their decay formulas, that isn't the same, because spin is a conserved quantity.topsquark said:Can you list the properties of each of these particles?
They do, indeed, have different masses. But why do you say they have different spins? They are both spin 1 bosons.talanum52 said:They don't have the same mass and spin. Because they decay to the same particles, there must be additional particles in their decay formulas, that isn't the same, because spin is a conserved quantity.
They decay to identical particles - that's why.vanhees71 said:I've no clue, how one can get to the idea they were the same particles to begin with.
Are decay products the same as their constituents?talanum52 said:They decay to identical particles - that's why.
I'm arguing that structure is conserved. Then the neutral pion's substructures cancel (not the energy).malawi_glenn said:Are decay products the same as their constituents?
Neutral pion decays into two photons, is the pion composed of photons?
It's an interesting idea, but it doesn't work well in practice. In fact, this example shows why you can't make this argument in general: the ##W^-## is a fundamental particle and does not have any structure to conserve. And as there are many ways in which it can decay it would be hard to say, just by looking at the daughters, what the original particle might have been before the decay. (Possible, of course, but hard.)talanum52 said:I'm arguing that structure is conserved. Then the neutral pion's substructures cancel (not the energy).
talanum52 said:I'm arguing that structure is conserved. Then the neutral pion's substructures cancel (not the energy).
Structure is the quantum numbers, mass, velocity and the space points and left out points that carries it. In my model of particles. It just seems conserved because this is the most economical.malawi_glenn said:Define "structure"and how/why it would be conserved.
This is personal theory, which is off limits here. Your legitimate question has been answered.talanum52 said:In my model of particles
No, Pi-mesons (or pions) and W-bosons are not the same particle. Pi-mesons are mesons composed of a quark and an antiquark, while W-bosons are gauge bosons that mediate the weak force. They have different properties, masses, and roles in particle physics.
Pi-mesons are much lighter than W-bosons and are involved in strong interactions, while W-bosons are heavy particles that mediate the weak force. Pi-mesons are composed of quark-antiquark pairs, whereas W-bosons are elementary particles without substructure.
Pi-mesons can decay through weak interactions into lighter particles such as muons and neutrinos. For example, a charged pion (π⁺) typically decays into a muon (μ⁺) and a muon neutrino (ν_μ).
W-bosons can decay into various pairs of fermions, such as a lepton and a neutrino, or a quark and an antiquark. For example, a W⁺ boson can decay into a positron (e⁺) and an electron neutrino (ν_e) or into an up quark (u) and a down antiquark (d̅).
Understanding the differences between Pi-mesons and W-bosons is crucial for comprehending the fundamental forces and interactions in particle physics. It helps in distinguishing the roles of different particles in various processes, such as particle decay and interactions, thus contributing to our overall knowledge of the universe at the most fundamental level.