Factorization fits to charmless strangelessBdecays
نویسندگان
چکیده
منابع مشابه
Factorization fits and the unitarity triangle in charmless two-body B decays
We present fits to charmless hadronic B decay data from the BaBar, Belle and Cleo experiments using two theoretical models: (i) the QCD factorization model of Beneke et al. and (ii) QCD factorization complemented with the so-called charming penguins of Ciuchini et al. When we include the data from pseudoscalar-vector decays the results favor the incorporation of the charming penguin terms. We a...
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Using the QCD factorization approach, we reexamine the two-body hadronic charmless B-meson decays to final states involving a pseudoscalar (P ) and a vector (V ) meson, with inclusion of the important penguin contractions of the spectator-scattering amplitudes induced by the b → Dg∗g∗ (with D = d or s, and g∗ denoting an off-shell gluon) transition, which are of order αs. Their impacts on the C...
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We first present a model-independent analysis using flavor SU(3) symmetry with SU(3) breaking effects in B decays to two charmless vector mesons (V V ) in the final state. In order to bridge the flavor SU(3) symmetry approach and the factorization approach in B → V V decays, we explicitly show how to translate each SU(3) amplitude into a corresponding amplitude in factorization. Various decay m...
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In the heavy quark limit, both vector mesons in the charmless B → V V decay should have zero helicity and the corresponding amplitude is proportional to the form factor difference (A1 − A2). The first observed charmless B → V V mode, B → φK∗, indicates that the form factors A1(q) and A2(q 2) cannot be very similar at low q2 as shown in some form-factor models. The approach of QCD-improved facto...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2005
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.71.077301