Particles - subparticles - subsubparticles

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In summary, particle physicists do not currently consider models of particles made up of smaller subparticles due to a lack of experimental evidence and the complexity of such models. While there have been some attempts in the past, recent preon models from q-deformed LQG show potential for overcoming previous drawbacks. However, there has not been much progress or research in this area in recent years. Overall, while the preon hypothesis is interesting, it is not currently a widely accepted explanation for particle composition.
  • #1
dimilion
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Why recent particle physicists don’t consider models of particles (quarks, leptons)
built from more light subparticles?
Is there problems of principle
or the available experimental data don’t need similar models?
 
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  • #2
dimilion said:
Why recent particle physicists don’t consider models of particles (quarks, leptons)
built from more light subparticles?

Before you ask why something is so, uiut's a good idea to find out if it is so. The LHC experiments have published about a dozen papers searching for such things. And not finding them.
 
  • #3
As an example, there were the old preon models but the binding energies well exceeded quark, lepton rest masses. More recently, new preon models are coming from q-deformed LQG where "preon configurations" come about by an entirely different mechanism and so does not necessarily suffer from the drawback of the old models.
 
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  • #4
julian said:
More recently, new preon models are coming from q-deformed LQG where "preon configurations" come about by an entirely different mechanism and so does not necessarily suffer from the drawback of the old models.
but afaik there has not been much progress (or even research activities) over the last couple of years
 
  • #5
tom.stoer said:
but afaik there has not been much progress (or even research activities) over the last couple of years
Yes - afaik.
 
  • #6
If something is not forbidden, it is possible.

I find preon hypothesis interesting, but not sufficiently deep.
 

1. What are particles?

Particles are tiny pieces of matter that make up the universe. They can be as small as atoms or as large as galaxies.

2. What are subparticles?

Subparticles are smaller particles that make up larger particles. For example, protons and neutrons are made up of even smaller particles called quarks.

3. What are subsubparticles?

Subsubparticles are even smaller particles that make up subparticles. For example, quarks are made up of even smaller particles called elementary particles.

4. How do scientists study particles?

Scientists study particles using advanced technologies such as particle accelerators and detectors. They also use mathematical models and theories to understand the behavior of particles.

5. What is the significance of studying particles?

Studying particles helps us understand the fundamental building blocks of the universe and how they interact with each other. This knowledge can lead to advancements in various fields, including technology, medicine, and energy production.

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