How many hypothetical particles do we need

In summary, the standard model, a theory developed by physicists, explains how particles hold the universe together and includes 6 leptons, 6 quarks, and force carrier particles. However, it does not address gravity or the dark matter problem. Current gravitational theories do not require a graviton, but some unknown particles, such as WIMPs and MACHOs, may be needed to solve these open problems.
  • #1
wolram
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How many as yet undiscovered particles do we need to make the standard model work?
 
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  • #2
Define "work".
 
  • #3
Physicists have developed a theory called The standard model to explain how particles holds the universe together.
The standard model basically includes 6 leptons,6 quarks,Force carrier particles.
The quarks are classified as up,down,top,bottom,charm,strange.
The leptons are classified as electron,muon,tau,electron neutrino,muon neutrino,tau neutrino.
The force carriers include photons,gluons,W boson,Z boson.
 
  • #6
wolram said:
The graviton is needed for our theories of gravity
Some as yet unknown particle is needed to make dark matter work.
etc.

graviton https://en.wikipedia.org/wiki/Graviton
Axion https://en.wikipedia.org/wiki/Axion
etc.
But the standard model does not deal with gravity, nor does it deal with a solution to the dark matter problem. Since the are open problems, we have no idea what is required.

Also, current gravitational theories do not require a graviton. Quantisations of them do.
 

1. How do scientists determine the number of hypothetical particles needed?

Scientists determine the number of hypothetical particles needed by conducting experiments and analyzing data. They also use mathematical models and theories to predict the existence of new particles.

2. What are hypothetical particles?

Hypothetical particles are particles that have been theorized to exist, but have not yet been observed or proven to exist through experiments.

3. Why do scientists need hypothetical particles?

Scientists need hypothetical particles to explain phenomena that cannot be explained by known particles. These particles are also necessary for the development of new theories and models in physics.

4. How many hypothetical particles are currently being studied?

There is no specific number of hypothetical particles being studied as new particles are constantly being proposed and studied by scientists. Some popular examples include dark matter particles, gravitons, and axions.

5. Are hypothetical particles important in modern physics?

Yes, hypothetical particles play a crucial role in modern physics as they help scientists understand and explain the fundamental forces and interactions in the universe. They also aid in the development of new theories and advancements in the field of physics.

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