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lepton number

   Also found in: Dictionary/thesaurus, Wikipedia 0.04 sec.
lepton number [′lep‚tän ‚nəm·bər]
(particle physics)
A conserved quantum number, equal to the number of leptons minus the number of antileptons in a system.


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In the minimal supersymmetric standard model (MSSM), unlike in the SM, the conservation of lepton number (L) and of baryon number (B) is not automatic: the superpotential can contain renormalizable and gauge invariant L- and B-violating terms.
 
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