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What are the quantum particles that have an anti-quark component?
How do anti-quarks affect matter?
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All hadrons and anti-hadrons have quarks and anti-quarks in their quark/anti-quark/gluon sea. However, if you limit your question to valence particles, the answer is that all mesons and all anti-baryons do.
Mesons are particles comprised of a quark and an anti-quark. The lightest mesons are pi mesons, or pions.
Baryons are particles comprised of three quarks, and anti-baryons are comprised of three anti-quarks. Examples of baryons are protons and neutrons. Examples of anti-baryons are anti-protons and anti-neutrons.
Mesons are particles comprised of a quark and an anti-quark. The lightest mesons are pi mesons, or pions.
Baryons are particles comprised of three quarks, and anti-baryons are comprised of three anti-quarks. Examples of baryons are protons and neutrons. Examples of anti-baryons are anti-protons and anti-neutrons.
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What are valence particles? W- boson was referenced as a valence particle in a previous question. What does valence imply?
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Valence particles are ones that have a long-term existence, relatively speaking. In addition the 2 up quarks and one down quark in a proton, there is a sea of other quarks, anti-quarks, and gluons that pop into and out of existence for periods of time so short that they are almost, but not quite, not there. By the way, the W- is not a valence particle. The quark (for example) that emits it, could be a valence particle.
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