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The System of Neutral K-Mesons and CP Violation

  • Otto Nachtmann
Chapter
Part of the Texts and Monographs in Physics book series (TMP)

Abstract

Since 1957 we have known that the weak interaction possesses neither parity nor charge-conjugation invariance. Neither the parity operator P nor the charge-conjugation operator C are conserved.1 Until 1964, however, it was believed that the product operator CP is a conserved quantity. As a result of the CPT theorem, the time-reversal operator T would then also be conserved. From the fundamental work of Christensen et al. (1964, 1965) we know that CP symmetry is broken in the decay of the neutral K-mesons. In the course of the further experimental and theoretical investigations of the K-mesons it was shown that the CP violation is connected with a violation of time-reversal invariance, whereas there was no evidence for a violation of CPT invariance (Schubert 1970; see also Casella 1969). In Nature, past and future are thus distinguishable even on a microscopic level.

Keywords

Lagrange Density Dirac Field Tensor Current Pseudo Scalar Particle Violate Time Reversal Invariance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • Otto Nachtmann
    • 1
  1. 1.Institut für Theoretische PhysikUniversität HeidelbergHeidelbergFederal Republic of Germany

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