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conservation of lepton number

American  

noun

Physics.

  1. the principle that the total lepton number remains constant in any process involving elementary particles.

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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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.