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We report a theoretical analysis of the exclusive non-leptonic decays of Bmesons into two light mesons,some of which have been measured recently by theCLEO collaboration. Our analysis is carried out in the context of an effectiveHamiltonian based on the Standard Model using next-to-leading orderperturbative QCD calculations. Using a factorization ansatz for the hadronicmatrix elements, we show that existing data are accounted for in this approach.Thus, theoretical scenarios with a substantially enhanced Wilson coefficient ofthe chromomagnetic dipole operator (as compared to the SM) and/or those with asubstantial color-singlet $c\bar{c}$ component in the wave function of$\eta^\prime$ are not required by these data. Implications of some of thesemeasurements for the parameters of the CKM matrix are presented.Comment: 42 pages including 21 postscript figures; uses epsfig, some ref.  added; improved mixing scheme for (eta,eta') system implemented; error  corrected in (3.61) as explained below eq. (3.64) in the present version.  Figs. 17-20 update

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Analysis of two-body nonleptonic<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi></mml:math>decays involving light mesons in the standard model

Analysis of two-body nonleptonicBdecays involving light mesons in the standard model