lepton reaction

См. также в других словарях:

• 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 — 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

• leptonique — lepton [ lɛptɔ̃ ] n. m. • v. 1962; en angl. (1948); du gr. leptos « mince » et (électr )on ♦ Phys. Particule élémentaire légère (électron, muon, neutrino, etc.) qui ne subit pas d interactions fortes (contrairement à l hadron). Quarks et leptons …   Encyclopédie Universelle

• 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

• Nobel Prizes — ▪ 2009 Introduction Prize for Peace       The 2008 Nobel Prize for Peace was awarded to Martti Ahtisaari, former president (1994–2000) of Finland, for his work over more than 30 years in settling international disputes, many involving ethnic,… …   Universalium

• NEUTRINOS — Simple hypothèse mathématique en 1930, particule physique aux propriétés exotiques en 1956, le neutrino s’est révélé peu à peu être l’une des particules élémentaires les plus fondamentales de la physique. Il s’est aussi multiplié: on en connaît… …   Encyclopédie Universelle

• Neutrino detector — The Sudbury Neutrino Observatory, a 12 meter sphere filled with heavy water surrounded by light detectors located 2000 meters below the ground in Sudbury, Ontario, Canada. A neutrino detector is a physics apparatus designed to study neutrinos.… …   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

• Electron — For other uses, see Electron (disambiguation). Electron Experiments with a Crookes tube first demonstrated the particle nature of electrons. In this illustration, the profile of the cross shaped target is projected against the tube face at right… …   Wikipedia

• Neutrino — For other uses, see Neutrino (disambiguation). Neutrino/Antineutrino The first use of a hydrogen bubble chamber to detect neutrinos, on November 13, 1970. A neutrino hit a proton in a hydrogen atom. The collision occurred at the point where three …   Wikipedia

• physics — /fiz iks/, n. (used with a sing. v.) the science that deals with matter, energy, motion, and force. [1580 90; see PHYSIC, ICS] * * * I Science that deals with the structure of matter and the interactions between the fundamental constituents of… …   Universalium