Particle-width effect on CP-violating asymmetries.
نویسنده
چکیده
CP -violating asymmetries calculated from the Breit-Wigner approximation for unstable particle propagators violate CPT . A formalism satisfying CPT invariance and unitarity is presented. Applications are given to t decays. For the decay t → bντ τ̄ in a class of CP -violating Higgs models the CP -violating asymmetry turns out to be 10−4 times smaller than the previously reported results. PACS#: 11.30.Er, 13.20.Jf, 13.30.Ce.
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ورودعنوان ژورنال:
- Physical review. D, Particles and fields
دوره 47 5 شماره
صفحات -
تاریخ انتشار 1993