Search results

a classification scheme for hadrons in terms of their valence quarks—the quarks and antiquarks that give rise to the quantum numbers of the hadrons. The...

valence quarks and one valence antiquark. Other exotic baryons may also exist. Ordinary mesons are made up of a valence quark and a valence antiquark...

families of hadrons: baryons, with three valence quarks, and mesons, with a valence quark and an antiquark. The most common baryons are the proton and...

hadrons containing an even number of valence quarks (at least 2). Most well known mesons are composed of a quark-antiquark pair, but possible tetraquarks (4 quarks)...

and antiquarks than would be possible in proton–proton collisions. This is because the valence quarks in the proton, and the valence antiquarks in the...

of more than three valence quarks. By contrast, "ordinary" hadrons contain just two or three quarks. Hadrons with explicit valence gluon content would...

numbers of valence quarks (at least three), and some experiments show evidence of exotic mesons, which do not have the conventional valence quark content...

valence quarks at all. tetraquarks Tetraquarks have two valence quark–antiquark pairs. hybrid mesons Hybrid mesons contain a valence quark–antiquark pair...

antiproton, one of its quarks, usually a constituent valence quark, may annihilate with an antiquark (which more rarely could be a sea quark) to produce...

corresponding antiparticle, the antiproton, is made of two up antiquarks and one down antiquark. Baryons participate in the residual strong force, which is...

must have enough energy to produce a quark-antiquark pair. But above the D meson threshold, the original valence quarks need not annihilate; they can propagate...

number of strange quarks ( s ) and ns̅ represents the number of strange antiquarks ( s ). This quantum number was introduced by Murray Gell-Mann. This definition...

electron from a full valence band. A hole is essentially a way to conceptualize the interactions of the electrons within a nearly full valence band of a crystal...

or strange) quark, Q represents a heavy (charm or bottom) quark, and antiquarks are denoted with an overline. The existence and stability of tetraquark...

is a human-made subatomic particle, consisting of four quarks and one antiquark bound together; they are not known to occur naturally, or exist outside...

scales), a baryon contains three valence partons (quarks) and a meson contains two valence partons (a quark and an antiquark parton). At higher energies,...

transporting net electric charge. An exciton can form when an electron from the valence band of a crystal is promoted in energy to the conduction band e.g., when...

quasiparticle. In another example, the aggregate motion of electrons in the valence band of a semiconductor or a hole band in a metal behave as though the...

hypothetical composite particle. It consists solely of gluon particles, without valence quarks. Such a state is possible because gluons carry color charge and...

Up (quark antiquark) Down (quark antiquark) Charm (quark antiquark) Strange (quark antiquark) Top (quark antiquark) Bottom (quark antiquark) Leptons Electron...