What is Charm quark?
'''Charm quarks''' or '''c quarks''' are the third most massive of the six [[quarks]]. Like all quarks, they are thought to be so small that they can not be divided. (They are called [[elementary particle]]s for this reason). Similar to [[up quark]]s, charm quarks have a [[electromagnetism|charge]] of +2/3. Although charm quarks are not extremely common, they can be found in [[particle]]s created by [[particle accelerator]]s (which smash [[atom]]s together at extremely high speeds), such as [[J/ψ meson]]s, [[D meson]]s, and other charmed particles. Since they are [[fermion]]s (particles that can not have more than one of that particle at the same place at the same time), charm quarks have a [[Spin (physics)|spin]] of 1/2. The discovery of charm quarks – and J/ψ mesons – led to a rapid series of scientific breakthroughs. These events are known as the [[November revolution]]. {{elementary}} [[Category:Quarks]]