Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-07-23
Phys.Lett.B517:355-362,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages Latex, 4 figures
Scientific paper
10.1016/S0370-2693(01)01030-9
We study the effects of periodic matter in kaon regeneration, motivated by the possibility of parametric resonance in neutrino oscillations. The large imaginary parts of the forward kaon-nucleon scattering amplitudes and the decay width difference $\Delta\Gamma$ prevent a sizable enhancement of the $K_L\to K_S$ transition probability. However, some interesting effects can be produced using regenerators made of alternating layers of two different materials. Despite the fact that the regenerator has a fixed length one can obtain different values for the probability distribution of the $K_L$ decay into a final state. Using a two-arm regenerator set up it is possible to measure the imaginary parts of the $K^0(\bar{K}^0)$-nucleon scattering amplitudes in the correlated decays of the $\phi$-resonance. Combining the data of the single-arm regenerator experiments with direct and reverse orders of the matter layers in the regenerator one can independently measure the CP violating parameter $\delta$.
Akhmedov Evgeny
Barroso Augusto
Keränen Petteri
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