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单词 CP Symmetry
释义

CP Symmetry

原声例句
时间简史(原版)

J. W. Cronin and Val Fitch, discovered that even the CP symmetry was not obeyed in the decay of certain particles called K-mesons.

J. W. Cronin 和 Val Fitch 发现,在称为 K 介子的某些粒子的衰变中,甚至不遵守 CP 对称性。

英语百科

CP violation

Kaon oscillation box diagram
The two box diagrams above are the Feynman diagrams providing the leading contributions to the amplitude of K0-K0 oscillation

In particle physics, CP violation (CP standing for charge parity) is a violation of the postulated CP-symmetry (or charge conjugation parity symmetry): the combination of C-symmetry (charge conjugation symmetry) and P-symmetry (parity symmetry). CP-symmetry states that the laws of physics should be the same if a particle is interchanged with its antiparticle (C symmetry), and when its spatial coordinates are inverted ("mirror" or P symmetry). The discovery of CP violation in 1964 in the decays of neutral kaons resulted in the Nobel Prize in Physics in 1980 for its discoverers James Cronin and Val Fitch.

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更新时间:2025/6/20 18:50:10