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Related to leptons: Baryons, Bosons, Hadrons


(lep -tonz) A class of pointlike elementary particles that do not participate in strong interactions (see fundamental forces); it includes the electron, muon, the massive tau lepton, the neutrinos, and their associated antiparticles. Leptons show no evidence of any internal structure. See also Big Bang theory.



a class of elementary particles that do not have strong interaction—that is, they participate only in electromagnetic, weak, and gravitational interactions. The electron, muon, and electron and muon neutrinos and their corresponding antiparticles are classified as leptons. All leptons have a spin of ½ (that is, they are fermions). The name “lepton” (from Greek leptos, “small,” “light”) is associated with the fact that their mass is less than that of any other particle except the photon.

References in periodicals archive ?
It is an incomplete annihilation usually occurred between different flavor quark and antiquark and forms structureless and colorless but electrically charged leptons such as [e.
However, being the most massive and shortest-lived lepton, the tau lepton travels only about a millimeter before breaking apart.
Linear Accelerator Center (SLAC) was a member of the research team that identified the tau lepton in the 1970s.
But the standard model of fundamental particles and interactions says nothing directly about the masses of quarks and leptons.
The new particles promtply decay into leptons or pairs of quarks, which decay further, producing a spray of debris.
An attempt to provide precision lepton (electron and muon) detection in the trillion-volt energy region, it will be an experiment lasting 10 years and involving "God knows how many physicists.
GE is really looking forward to have a great association with Lepton Software.
While this database is been regularly updated, Lepton also provides customized 3D models in various formats and creates complex and large 3D models according to the business requirement (like with less face Counts etc.
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Also, Lepton offers the complete gamut of Map data products for meeting the growing need of location information of organizations operating in markets like Mapping, BI/ BA, Vehicle Tracking, Navigation, mobile applications etc.
Lepton is providing its path-breaking innovative solutions - EnterpriseAccess, MarketPulse and SmartDonkey to different industries operating in growing markets of India, APAC, EMEA and USA regions.