top quark
truth quark

And no, this has nothing to do with the top quark.

Because top quarks are very massive, a lot of energy is needed to create one.

But the scientists were sure the top quark had to be somewhere.

All the particles in the model except the top quark have been discovered.

The top quark is believed to hold the clue to why matter has mass.

Without a top quark, you do not have 6 quarks.

Finding the top quark has been one of the toughest problems facing people who do science.

In 1995, he was a codiscoverer of the top quark.

There are multiple processes that can lead to the production of a top quark.

Each has been searching for the top quark with a different detector.