The lightest is the up quark, which is 470 times lighter than a proton.
From the sciencedaily.com
I'm looking at you in particular, up quark, down quark, and the electron.
From the scienceblogs.com
D0-meson's antiversion, D0-bar in the jargon, is composed of a charm antiquark and an up quark.
From the economist.com
The eta meson is a meson made of a mix of up quark, down quark, strange quark, quarks, and anti-quarks.
From the en.wikipedia.org
Every single atom in the Universe has nothing in it other than some combination of up quark, down quark and electron.
From the guardian.co.uk
This is still not satisfactory though, as we have no explanation for why the up-quark has more mass than the down-quark.
From the guardian.co.uk
Its protons contains one down quark and two up quarks, while neutrons contain two down quarks and one up quark.
From the en.wikipedia.org
At the end of this process the bottom quark and bottom antiquark, electron, neutrino, up quark, and down antiquark all move away from each other.
From the en.wikipedia.org
Ali and colleagues found that if a tetraquark made of one bottom quark, one up quark, and each of their anti-particles was created instead of bottomonium, the faster decay could be explained.