Neutral Kaon Spectrometer 2

Invariance Tests in Neutral Kaon

The time evolution of a neutral kaon state state is described by d dt Ψ = −iΛΨ , Λ ≡ M − i 2 Γ (1) where M and Γ are Hermitian 2 × 2 matrices known as the mass and decay matrices. The corresponding eigenvalues are λ L,S = m L,S − i 2 γ L,S. CPT invariance requires the diagonal elements of Λ to be equal. The CPT-violation complex parameter δ is defined as δ = Λ K 0 K 0 − Λ K 0 K 0 2(λ L − λ S) =...

Direct CP Violation in Neutral Kaon Decays

Abstract. The final result is presented of the NA48 experiment, performed at the CERN SPS neutral kaon beams, on the direct CP violation parameter Re(ε′/ε), as measured from the decay rates of neutral kaons into two pions. The data collected in years 1997-2001 yield the evidence for the direct CP violation with Re(ε′/ε) = (14.7± 2.2) × 10. Description of experimental method and systematics, com...

CP Violation in Neutral Kaon Decays

A brief review of the theoretical status of CP violation in decays of neutral kaons is presented. We focus on three important topics: e, E ' / E and IC, + TOVC. Invited Talk presented at the Symposium on Flavor-Changing Neutral Currents, Santa Monica, California, February 19-21, 1997

Cpt Invariance Tests in Neutral Kaon

CP T theorem is based on three assumptions: quantum field theory, locality, and Lorentz invariance, and thus it is a fundamental probe of our basic understanding of particle physics. Strangeness oscillation in K 0 − K 0 system, described by the equation i d dt K 0 K 0 = [M − iΓ/2] K 0 K 0 , where M and Γ are hermitian matrices (see PDG review [1], references [2,3], and KLOE paper [4] for notati...

Neutral kaon mixing beyond the standard model with nf = 2 + 1 chiral fermions