CPviolation in the partial width asymmetries forB−→π+π−K−andB−→K+K−K−decays
نویسندگان
چکیده
منابع مشابه
Particle-width effect on CP-violating asymmetries.
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#: 1...
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In the gauge theory context, a definition of branching ratios and partial widths of unstable particles is proposed that satisfies the basic principles of additivity and gauge independence. A simpler definition, similar to the conventional one, is examined in the Z0-boson case. In order to establish contact with experiment, we show that it leads to a peak cross section that justifies the express...
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We study CP asymmetries in B → hπ decays, where the hadronic states h = ρρ,KKπ, ππKK, etc., and h = ππ, KK, 2(ππ), etc., are taken on the resonances ηc and χc0, respectively. The relatively large ηc and χc0 decay widths, of about 10−15 MeV, provide the necessary absorptive phase in the interference between the resonance (going through b→ ccd) and the background (through b→ uud) contributions to...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2004
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.70.034033