crossing symmetry

crossing symmetry

[′krȯs·iŋ ‚sim·ə·trē]
(particle physics)
The amplitude for a process that involves creation of a particle with four-momentum Pμis equal to the amplitude for a process which is the same except it involves destruction of the antiparticle with four-momentum -Pμ.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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