Supersymmetry (SUSY).

A portion of physics wich has no direct evidence, yet still may exist.

It relates elementary particles of one spin to others of a half a spin difference. These are generally called their 'superpartners'.

SUSY exists as it helps solve lots of theoretical equations and helps a lot in string theory. Even though it is part of all most every 'theory' of string theory - string theory is not required for SUSY's existence. It could exist completely on its own, if proven that is.

Generally in our main SUSY theory, particles have giant 'shadow' particles.

I take it you know the standard model, yes?

A quark in SUSY is called a squark, alongside the normal quark too.

We have not detected any SUSY particles at all, but at the LHC they are doing experiments to try and prove the existence of the elusive particles.

Here is an imagine of the SUSY particles that I found online.

There isn't much to say on SUSY particles, unless you want some nasty math to accompany it. If SUSY is proven then we could be closer to proving one of the most developed and respected theories of this generation, String Theory. SUSY particles aren't really that important to most people, physicists will know and value their existence but to normal people like you, you don't need to worry. I just thought i'd inform you of them.

Thanks for reading, Ben.