Nonfactorization and color-suppressedB →ψ(ψ′)+K(K*) decays
نویسندگان
چکیده
منابع مشابه
Nonfactorization in B and D Decays
We discuss the role of nonfactorized contributions in B → ψ + K * and charmed meson decays. We demonstrate, using D + S → φπ as a model, how nonfactor-ization, annihilation and final state interactions can be built into effective and unitarized a 1 and a 2 .
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Using Nc = 3 value of the parameter a2 = 0.09 but including a modest nonfactorized amplitude, we show that it is possible to understand all data, including polarization, for color-suppressed B → ψ(ψ(2S))+K(K) decays in all commonly used models of form factors. We show that for B → ψ+K decay one can define an effective a2, which is process-dependent and, in general, complex; but it is not possib...
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The parameters χ1,2, which measure nonfactorizable soft gluon contributions to hadronic weak decays of mesons, are updated by extracting them from the data of D, B → PP, V P decays (P : pseudoscalar meson, V : vector meson). It is found that χ2 ranges from −0.36 to −0.60 in the decays from D → K̄π to D+ → φπ+, D → K̄π, while it is of order 10% with a positive sign in B → ψK, Dπ, Dπ, Dρ decays. Th...
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Available experimental data on decay rates for B → ψK, and decay rates and transversity amplitudes for B → ψK∗ are used to investigate nonfactorization contributions in these decays using five different theoretical models for the formfactors. Using the knowledge on nonfactorization so gained, we study the processes Bs → ψ(η, η′), Bs → ψφ and B → ψ(2S)K∗. We find that present experimental data f...
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With the inclusion of nonfactorized amplitudes in a scheme with Nc = 3, we have studied Cabibbo-favored decays of D0 and D+ into two-body hadronic states involving two isospins in the final state. We have shown that it is possible to understand the measured branching ratios and determined the sizes and signs of nonfactorized amplitudes required. PACS index: 13.25 Hw, 14.40. Nd on leave of absen...
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ژورنال
عنوان ژورنال: Zeitschrift für Physik C: Particles and Fields
سال: 1996
ISSN: 0170-9739,1431-5858
DOI: 10.1007/s002880050227