Effect of an absorbing medium on particle oscillations

Abstract

Particle oscillations in absorbing matter are considered. The approach based on the optical potential is shown to be inapplicable in the strong absorption region. Models with Hermitian Hamiltonian are analyzed. They give an increase of the process width in comparison with the model based on the optical potential.

Reinforcement of $K^0_{S}$ regeneration in the model with Hermitian Hamiltonian

“…In this connection the model based on the exact solution of coupled equations of motion was proposed [6,7]. However, it was shown in [8] that for a system of equations in the strong absorption region the optical potential is inapplicable. Bellow we present the calculations based on the S-matrix approach.…”

“…The basic element of this model is an optical potential. However, it was shown in [8] that for a system of equations in the strong absorption region the optical potential is inapplicable.…”

“…The optical potential is not used. The reinforcement of K 0 S regeneration should be expected [8]. (For the nn transitions in the medium the calculations beyond the potential model were presented in [9][10][11].…”