Direct CP, T and/or CPT violations in the K^0-\bar{K^0} system - Implications of the recent KTeV results on $2\pi$ decays -

S. Y. Tsai; Y. Takeuchi

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arxiv hep-ph/9909354 v1 pith:YGCEEO3B submitted 1999-09-14 hep-ph

Direct CP, T and/or CPT violations in the K⁰-bar{K⁰} system - Implications of the recent KTeV results on 2π decays -

Y. Takeuchi , S. Y. Tsai This is my paper

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The recent results on the CP violating parameters Re(e'/e) and \Delta\phi = \phi_{00}-\phi_{+-} reported by the KTeV Collaboration are analyzed with a view to constrain CP, T and CPT violations in a decay process. Combining with some relevant data compiled by the Particle Data Group, we find Re(e_2-e_0) = (0.85 +- 3.11)*10^{-4} and Im(e_2-e_0) = (3.2 +- 0.7)*10^{-4}, where Re(e_I) and Im(e_I) represent respectively CP/CPT and CP/T violations in decay of K^0 and \bar{K^0} into a 2\pi state with isospin I.

Direct CP, T and/or CPT violations in the K⁰-bar{K⁰} system - Implications of the recent KTeV results on 2π decays -

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