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lepton number

noun

, Physics.
  1. in a process involving elementary particles, the total number of leptons minus the total number of antileptons.


lepton number

noun

  1. physics a quantum number describing the behaviour of elementary particles, equal to the number of leptons present minus the number of antileptons. It is thought to be conserved in all processes l
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of lepton number1

First recorded in 1955–60
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Example Sentences

In addition, the emission of two electrons with no balancing antineutrinos would violate a symmetry principle known as the conservation of lepton number.

From Nature

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