Quarks: Composite particles that are composed of a quark and antiquark pair are called
A) leptons.
B) hadrons.
C) mesons.
D) nucleons.
E) baryons.

Question

Quizplus · Accepted Answer

Composite particles that are composed of a quark and antiquark pair are called mesons. Leptons are not composed of quarks and antiquarks, but are elementary particles. Hadrons, nucleons, and baryons are all composed of quarks, but they are not mesons as they are made up of multiple quarks.

Quarks: Composite Particles That Are Composed of a Quark and Antiquark