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Ground and temperature quantum Gibbs states are constructed for a ferroelectric anharmonic quantum oscillator model with small masses. It is shown that they possess mixing properties. The construction relies on the Feynman-Kac-Nelson representation of the conditional reduced density matrices and on the cluster expansions for the corresponding Gibbs field of trajectories. 1004 6. Cluster Expansions of Measures M 2T,Λ and M

The artificial neural network approach is used for separation of signals from a single photon γ and products of the π 0 , η and K 0 s meson neutral decay channels on the basis of the data from the CMS electromagnetic calorimeter alone. Rejection values for the three types of mesons as a function of single photon selection efficiencies are obtained for two pseudorapidity regions and initial E t of 20, 40, 60 and 100 GeV.

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