Quark quark.
An anti-down quark is the antimatter counterpart of a down quark, one of the elementary particles that make up protons and neutrons in the atomic nucleus. It has opposite electric charge to a down quark and can combine with other quarks to form antimatter particles.
A quark is a kind of subatomic particle, and 3 quarks makes up another subatomic particle (a baryon). A quark and an anti-quark make up another kind of sub-atomic particle, (a meson).
Im afraid they dont, or to say it better the top quark does not make anything (yet). This is because of its very short lifetime (about 4.38*10^-25) which is too short to interact with a gluon and thus make a hadron.
Yes, contrast to Proton which is made up of Two up and one down quark.
An antibottom quark (or b-bar quark) is the antiparticle of a bottom quark. It has the same mass as a bottom quark but opposite electric charge and other quantum numbers. When a bottom quark meets an antibottom quark, they can annihilate each other and produce energy.
Quark.
yes. you can make apple sauce out of ny apples.
Neutral pions are composed of a quark-antiquark pair, specifically an up quark and an anti-up quark or a down quark and an anti-down quark. They are the lightest mesons and are unstable, decaying rapidly into two photons.
quark quark
Quark CopyDesk was created in 1991.
Quark Pharmaceuticals was created in 1993.