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D-0-(D-0)over-bar mixing in the weak-gauged U(4)(L)circle times U(4)(R) chiral Lagrangian model

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D-0-(D-0)over-bar mixing in the weak-gauged U(4)(L)circle times U(4)(R) chiral Lagrangian model

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Amorós Vicente, Gabriel; Botella Olcina, Francisco J.; Noguera Puchol, Santiago; Portolés Ibáñez, Jorge

Aquest document és un/a article, creat/da en: 1998

Este documento está disponible también en : 10.1016/S0370-2693(98)00047-1

The D-0-<(D)over bar(0)> mixing is analyzed in a weak gauged U(4)(L) x U(4)(R) chiral lagrangian model where the electroweak interaction is introduced as a gauge theory over the meson degrees of freedom. This model allows a particular realization of the G.I.M. mechanism and then could be useful in the study of processes where G.I.M. suppression is effective. As a test of the model we have also analyzed the K-0-<(K)over bar(0)> mixing. We find am, in good agreement with the experimental result and we show that the D-0-<(D)over bar(0)> mixing is very much suppressed in agreement with previous estimates in the Heavy Quark expansion framework.

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