- conservation of lepton number
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the principle that the total lepton number remains constant in any process involving elementary particles.
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Universalium. 2010.
conservation of lepton number
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conservation of lepton number — Physics. the principle that the total lepton number remains constant in any process involving elementary particles … Useful english dictionary
Lepton number — In high energy physics, the lepton number is the number of leptons minus the number of antileptons.In equation form,::L = n {ell} n {overline{ellso all leptons have assigned a value of +1, antileptons −1, and non leptonic particles 0. Lepton… … Wikipedia
Lepton — Leptons are a family of fundamental subatomic particles, comprising the electron, the muon, and the tauon (or tau particle), as well as their associated neutrinos (electron neutrino, muon neutrino, and tau neutrino). Leptons are spin frac|1|2… … Wikipedia
lepton — lepton1 /lep ton/, n., pl. lepta / teuh/. 1. an aluminum coin of modern Greece, the 100th part of a drachma. 2. a small copper or bronze coin of ancient Greece. [1715 25; < Gk leptón (nómisma) a small (coin), n. use of neut. of leptós small; see… … Universalium
Conservation law — For the legal aspects of environmental conservation, see conservation movement. In physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves. One particularly… … Wikipedia
conservation law — Physics, Chem. any law stating that some quantity or property remains constant during and after an interaction or process, as conservation of charge or conservation of linear momentum. [1945 50] * * * or law of conservation In physics, the… … Universalium
Baryon number — Flavour in particle physics Flavour quantum numbers: Isospin: I or I3 Charm: C Strangeness: S Topness: T Bottomness: B′ Related quantum numbers: Baryon number: B Lepton number: L Weak isospin: T or T3 Electric charge: Q … Wikipedia
B−L — In high energy physics, B−L (pronounced bee minus ell ) is the baryon number minus the lepton number. This quantum number is the charge of a global/gauge U(1) symmetry in some GUT models, called U(1)B−L. Unlike baryon number alone or lepton… … Wikipedia
neutrino — /nooh tree noh, nyooh /, n., pl. neutrinos. Physics. any of the massless or nearly massless electrically neutral leptons. There is a distinct kind of neutrino associated with each of the massive leptons. Cf. antineutrino, lepton, conservation of… … Universalium
subatomic particle — or elementary particle Any of various self contained units of matter or energy. Discovery of the electron in 1897 and of the atomic nucleus in 1911 established that the atom is actually a composite of a cloud of electrons surrounding a tiny but… … Universalium
