pion decay

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• Pion decay constant — In particle physics, the pion decay constant is the square root of the coefficient in front of the kinetic term for the pion in the low energy effective action. It is dimensionally an energy scale and it determines the strength of the chiral… …   Wikipedia

• Pion — This article is about the subatomic particles. For the self propelled gun, see 2S7 Pion. Pion The quark structure of the pion. Composition π …   Wikipedia

• pion — /puy on/, n. Physics. the first meson to be discovered: it has spin 0 and may be positively or negatively charged or neutral; charged pions decay into a muon and a neutrino or antineutrino. Symbolically represented by the small greek letter Pi.… …   Universalium

• Proton decay — In particle physics, proton decay is a hypothetical form of radioactive decay in which the proton decays into lighter subatomic particles, usually a neutral pion and a positron. Proton decay has not been observed. There is currently no evidence… …   Wikipedia

• Particle decay — is the spontaneous process of one elementary particle transforming into other elementary particles. During this process, an elementary particle becomes a different particle with less mass and an intermediate particle such as W boson in muon decay …   Wikipedia

• Semileptonic decay — In particle physics the semileptonic decay of a hadron refers to a decay through the weak interaction in which one lepton (and the corresponding neutrino) is produced in addition to one or more hadrons.An example of a semileptonic decay… …   Wikipedia

• Anomalie (Quantenfeldtheorie) — Unter einer Anomalie in der Quantenfeldtheorie versteht man die Brechung einer klassischen Symmetrie einer Feldtheorie (auf klassischem Niveau) durch den Prozess der Quantisierung. Technisch gesehen ergeben sich solche anomalen Symmetrien, indem… …   Deutsch Wikipedia

• International Muon Ionization Cooling Experiment — The International Muon Ionization Cooling Experiment (or MICE) is a high energy physics experiment dedicated to observing ionization cooling of muons for the first time. This is a process where by the beam emittance of a beam is reduced in order… …   Wikipedia

• Chiral symmetry breaking — In particle physics, chiral symmetry breaking is an example of spontaneous symmetry breaking affecting the chiral symmetry of gauge theory such as Quantum Chromodynamics. The origin may be described as a fermion condensate (vacuum condensate of… …   Wikipedia

• Сверхсветовое движение — Сверхсветовое движение  движение со скоростью, превышающей скорость света. Несмотря на то, что согласно специальной теории относительности скорость света в вакууме является максимально достижимой скоростью распространения сигналов, а энергия …   Википедия

• Magnetic catalysis — is a phenomenon in quantum field theory which explains a spontaneous breaking of flavor or chiral symmetry, triggered by the presence of an external magnetic field. Contents 1 General description 2 Possible applications 2.1 Chiral symmetry brea …   Wikipedia