One of the mysteries of the English language finally explained.
The antiparticle of a quark.
- ‘A neutral pion consists of a down quark and a down antiquark.’
- ‘A single quark will be surrounded by a sea of continuously appearing and annihilating virtual pairs of quarks and antiquarks, and virtual pairs of gluons and antigluons.’
- ‘The proton consists of three quarks, two up and one down, living in a complicated soup of dynamical quarks, antiquarks and gluons, which have ‘colour’ charges.’
- ‘Kaons and pions are examples of particles known as mesons, which contain a quark and an antiquark.’
- ‘I've labeled the charges as q and q-bar for quark and antiquark, but that's modern terminology that might not have been present in the early days of string theory.’
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