Summary
The rate of the process φ→K0 \(\bar K^0 \) C-even background for the main decay channel φ→K0 \(\bar K^0 \) of the φ-factories currently under the project has been calculated within the framework of an effective model with massive constituent quarks. The result has the following form:r= Λ(φ→K0 \(\bar K^0 \))/Λ(φ→K0 \(\bar K^0 \))=(4÷8)·10−6 and can be essential for precise measurements ofCP violation parameters in KL−KS system.
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Pivovarov, A.A. An estimate of theC-even background for φ-factories. Nuov Cim A 105, 641–648 (1992). https://doi.org/10.1007/BF02730769
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DOI: https://doi.org/10.1007/BF02730769