Can weightless particles affect the forces in the universe?

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SUMMARY

The discussion centers on the implications of weightless particles, specifically photons and gluons, on the forces in the universe. It establishes that while these particles possess zero rest mass, they still carry energy, which allows them to interact with other particles. The equivalence of mass and energy, as articulated by Einstein's theory, clarifies that high-energy photons can transform into massive particles like electrons and positrons when interacting with a nucleus. This interaction demonstrates that weightless particles can indeed influence forces in the universe.

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  • Understanding of particle physics concepts, specifically mass-energy equivalence.
  • Familiarity with the properties of photons and gluons.
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  • Basic grasp of the Standard Model of particle physics.
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taylordnz
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If the most elementary particles (beyond the hypothetical hypoquark, gluon, photon) and are weightless wouldn't larger particles made of them weigh notthing either and as they have no mass wouldn't the forces not be able to act upon them and not able to interact with other particles?

whats your veiw on this?
 
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Photons and gluons have zero REST mass, but they travel at the speed of light. However, they have energy. The equivalence of mass and energy resolves your question. For example, a high energy photon can (in the presence of a nucleus) change into an electron and a positron.
 

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