CP violation and electric-dipole-moment at low energy tau-pair production
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CP violation and electric-dipole-moment at low energy tau-pair production

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CP violation and electric-dipole-moment at low energy tau-pair production

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Bernabeu Alberola, José Perfil; González Sprinberg, Gabriel A.; Vidal Perona, Jorge Perfil
Aquest document és un/a article, creat/da en: 2004

Este documento está disponible también en : http://dx.doi.org/10.1016/j.nuclphysb.2004.08.038
CP violation at low energy is investigated at the tau electromagnetic vertex. High statistics at B-factories, and on top of the gamma resonances, allows a detailed investigation of CP-odd observables related to the tau-pair production. The contribution of the tau electric dipole moment is considered in detail. We perform an analysis independent from the high energy data by means of correlation and linear spin observables at low energy. We show that different CP-odd asymmetries, associated to the normal-transverse and normal-longitudinal correlation terms can be measured at low energy accelerators, both at resonant and non-resonant energies. These observables allow to put stringent and independent bounds to the tau electric dipole moment that are competitive with other high or low energy results.

    Bernabeu Alberola, José; González Sprinberg, Gabriel; Vidal Perona, Jorge (2004) CP violation and electric-dipole-moment at low energy tau-pair production Nuclear Physics B 701 1-2 87 102
http://dx.doi.org/10.1016/j.nuclphysb.2004.08.038
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