neutral pion

См. также в других словарях:

• Neutral heavy lepton — Neutral Heavy Leptons (NHL) arise in some extensions to the Standard Model (called SM from here on). NHLs are also referred to in the literature as heavy neutrinos, righthanded neutrinos, or sterile neutrinos.Neutral Heavy Lepton is a possible… …   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 — (π+) Klassifikation Boson Hadron Meson Eigenschaften [1] Ladung 1 e …   Deutsch Wikipedia

• pion — [pī′än΄] n. [ PI2 + (MES)ON] Particle Physics any of three short lived mesons that may be positive, negative, or neutral: pions have a mass c. 270 times that of an electron and play an important role in the binding forces within the nucleus of an …   English World dictionary

• pion — Meson Mes on, n. [NL., fr. Gr. me son middle, neut. of me sos, a., middle.] 1. (Anat.) The mesial plane dividing the body of an animal into similar right and left halves. The line in which it meets the dorsal surface has been called the… …   The Collaborative International Dictionary of English

• pion — noun /ˈpaɪɒn/ Any of three semistable mesons, having positive, negative or neutral charge, composed of up and down quarks/antiquarks. <! either π, a neutral form with a mass 264 times that of an electron, or π or π, a charged form with a mass… …   Wiktionary

• pion — noun Etymology: contraction of pi meson Date: 1950 a meson that is a combination of up and down quarks and antiquarks, that may be positive, negative, or neutral, and that has a mass about 270 times that of the electron • pionic adjective …   New Collegiate Dictionary

• 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

• PION — posterior ischemic optic neuropathy * * * pi·on (piґon) [pi meson] a subatomic particle, which may be positive, negative, or neutral, with mass intermediate between that of an electron and that of a proton; it carries the force that binds the… …   Medical dictionary

• pion — paɪɑn / É’n n. type of fundamental particle, type of meson, elementary particle that can carry a positive negative or neutral charge (Physics) …   English contemporary dictionary

• pion — pi•on [[t]ˈpaɪ ɒn[/t]] n. phs any of the three lightest mesons, having positive, negative, or neutral electric charge and spin of zero • Etymology: 1950–55; pi (meson)+ on I …   From formal English to slang