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In particle physics, a meson (/ ˈmiːzɒn, ˈmɛzɒn /) is a type of hadronic subatomic particle composed of an equal number of quarks and antiquarks, usually one of each, bound together by the strong interaction. Because mesons are composed of quark subparticles, they have a meaningful physical size, a diameter of roughly one femtometre (10 ...
List of mesons. ) is a process that involves both weak and strong interactions. ). ). This list is of all known and predicted scalar, pseudoscalar and 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 subatomic particles composed of one quark ...
meson (a) and two π + mesons (b and c). The π − meson interacts with a nucleus in the emulsion at B. The π ± mesons have a mass of 139.6 MeV/c 2 and a mean lifetime of 2.6033 × 10 −8 s. They decay due to the weak interaction. The primary decay mode of a pion, with a branching fraction of 0.999877, is a leptonic decay into a muon and a ...
In particle physics, a rho meson is a short-lived hadronic particle that is an isospin triplet whose three states are denoted as. ρ+. , ρ0. and. ρ−. Along with 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 strongly interacting particle ...
(J/psi) meson / ˈ dʒ eɪ ˈ s aɪ ˈ m iː z ɒ n / is a subatomic particle, a flavor-neutral meson consisting of a charm quark and a charm antiquark. Mesons formed by a bound state of a charm quark and a charm anti-quark are generally known as "charmonium" or psions. [1] The J/ψ is the most common form of charmonium, due to its spin of 1 ...
Eta and eta prime mesons. ) are isosinglet mesons made of a mixture of up, down and strange quarks and their antiquarks. The charmed eta meson (. defined, but are made of charm quarks and bottom quarks respectively. The top quark is too heavy to form a similar meson, due to its very fast decay.
A muon (/ ˈm (j) uːɑːn / M (Y)OO-on; from the Greek letter mu (μ) used to represent it) is an elementary particle similar to the electron, with an electric charge of −1 e and spin-1/2, but with a much greater mass. It is classified as a lepton. As with other leptons, the muon is not thought to be composed of any simpler particles.
The existence of neutral B meson oscillations is a fundamental prediction of the Standard Model of particle physics. It has been measured in the. s system to be Δms = 17.77 ± 0.10 (stat) ± 0.07 (syst) / picosecond measured by CDF experiment at Fermilab. [2] A first estimation of the lower and upper limit of the.