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neutron. All mesons are unstable, with the longest-lived lasting for only a few tenths of a nanosecond. Heavier mesons decay to lighter mesons and ultimately...

In particle physics, a kaon, also called a K meson and denoted K , is any of a group of four mesons distinguished by a quantum number called strangeness...

vector mesons. See list of particles for a more detailed list of particles found in particle physics. This article contains a list of mesons, unstable...

of other charged mesons. In the eventual Standard Model of particle physics codified in the 1970s, all mesons other than the mu meson were understood to...

types of exotic meson may exist which do not fall within the quark model of classification. These include glueballs and hybrid mesons (mesons bound by excited...

consists of a quark and an antiquark and is therefore a meson. Pions are the lightest mesons and, more generally, the lightest hadrons. They are unstable...

D mesons are the lightest particle containing charm quarks. They are often studied to gain knowledge on the weak interaction. The strange D mesons (Ds)...

pions and omega mesons, the rho meson carries the nuclear force within the atomic nucleus. After the pions and kaons, the rho mesons are the lightest...

physics, exotic mesons are mesons that have quantum numbers not possible in the quark model; some proposals for non-standard quark model mesons could be: glueballs...

eta prime meson ( η′ ) are isosinglet mesons made of a mixture of up, down and strange quarks and their antiquarks. The charmed eta meson ( η c) and...

(J/psi) meson /ˈdʒeɪ ˈsaɪ ˈmiːzɒn/ is a subatomic particle, a flavor-neutral meson consisting of a charm quark and a charm antiquark. Mesons formed by...

The J/ψ particle is the analogous state made from charm quarks. List of mesons D.C. Hom; et al. (1977). "Observation of a Dimuon Resonance at 9.5 Gev in...

axial vector, mesons in the 1+− category are most readily be seen in proton‑antiproton annihilation and pion‑nucleon scattering. The mesons in the 1++ category...

and ϒ ( b b ) mesons. Due to the top quark's short lifetime, the theta meson is expected to not be observed in nature. List of mesons Roos, M.; Wohl...

exotic baryons may also exist. Ordinary mesons are made up of a valence quark and a valence antiquark. Because mesons have integer spin (0 or 1) and are not...

parity of the quark–antiquark pair. C = (−1)L+S for mesons which have no flavor. Flavored mesons have indefinite value of C. For isospin I = 1 and 0 states...

modes of the ϕ meson are K+ K− at 48.9%±0.5%, K0 S+ K0 L at 34.2%±0.4%, and various indistinguishable mixed combinations of rho mesons and pions at 15...

vector mesons contrast with the pseudovector mesons, which also have a total spin 1 but instead have even parity. The vector and pseudovector mesons are...

which suggests the mesons should be grouped into nonets (groups of nine). The eightfold way organizes eight of the lowest spin-0 mesons into an octet. They...

years, several other charmed particles, including the D meson and the charmed strange mesons, were found. In the 21st century, a baryon containing two...