Are quarks and leptons actually fundamental, or are they made up of even more fundamental particles?

Answer 1

Hard to say.

The history of particle physics is that, as we build more and more powerful accelerators, we're able to better disassemble particles into more fundamental particles. There's no particular sign we've reached the end of that process.

Answer 2

To the best of our knowledge, they are fundamental. We have detected no evidence to suggest otherwise.

If superstring theory or M-brane theory turns out to be true, and further, if strings or branes actually have a physical manifestation (not just mathematical artifacts), then we would consider them fundamental. But we likely still wouldn't call them particles.

Answer 3

One can not be sure that quarks are basic debris . there is not any actual information different than to assert that they are broken products of atomic undemanding element products which got here out of a synchrotron.. The scientist which might assert that quark is the essential undemanding particle could be remaining his ideas to the prospect that there exist interior the Universe smaller consumer-friendly mass structures to boot a masseless area structures.

Answer 4

At this time there is no evidence of deeper levels, or theories that predict them or require them

Answer 5

The better our technology, the deeper the levels.

My opinion- we have only scratched the surface.

god bless

Answer 6

I don't think anyone knows yet