0 Analysis of the Decays B → ππ and πK with QCD Factorization in the Heavy Quark Limit ∗
نویسندگان
چکیده
In this work, we calculate the branching ratios and CP asymmetries of the decays of B → ππ and πK with the frame of QCD factorization in the heavy quark limit. We also compare the results with the estimates by using generalized factorization and experimental measurements. PACS numbers 13.25.Hw 12.38.Bx Supported in part by National Natural Science Foundation of China and State Commission of Science and Technology of China Email: [email protected], [email protected], [email protected] Mailing address
منابع مشابه
0 Analysis of the Decays B → ππ and πK in QCD Factorization in the Heavy Quark Limit ∗
In this work, we calculate the branching ratios and CP asymmetries of the decays of B → ππ and πK in the frame of QCD factorization in the heavy quark limit. We also compare the results with the estimates by using conventional factorization and experimental measurements. PACS numbers 13.25.Hw 12.38.Bx Supported in part by National Natural Science Foundation of China and State Commission of Scie...
متن کاملQCD factorization and CP asymmetries in hadronic B decays
We review recent advances in the theory of strong-interaction effects and final-state interactions in hadronic weak decays of heavy mesons. In the heavy-quark limit, the amplitudes for most nonleptonic, two-body B decays can be calculated from first principles and expressed in terms of semileptonic form factors and lightcone distribution amplitudes. We summarize the main features of this novel ...
متن کاملAspects of QCD Factorization
The QCD factorization approach provides the theoretical basis for a systematic analysis of nonleptonic decay amplitudes of B mesons in the heavy-quark limit. After recalling the basic ideas underlying this formalism, several tests of QCD factorization in the decays B → D(∗)L, B → K∗γ, and B → πK,ππ are discussed. It is then illustrated how factorization can be used to obtain new constraints on ...
متن کاملفاکتور کردن QCD و پاد تقارنهای CP در واپاشیهای هادرونی B→Kπ
This paper studies improved factorization method, in the heavy quark limit, for B→Kπ decays. Paying attention to strong interaction scale AQCD, and calculating all parameters depending on that in the particular scale (the same as µ ) show that we can obtain better and comparable results for branching ratios such as BR(B0 → K0 π 0 )=8.5+0.7-0.5 × 10-6 and BR(B →π k0)=2.26+0.17-0.15 × 10-5, and...
متن کاملep - p h / 01 02 01 2 v 3 2 9 A ug 2 00 2 Factorization and hadronic B decays in the heavy quark limit
Recent theoretical investigations (M. Beneke et al 1999 Phys. Rev. Lett. 83 1914) of two-body hadronic B decays have provided justification, at least to order α s , for the use of the factorization ansatz to evaluate the B decay matrix elements provided the decay meson containing the spectator quark is not heavy. Although data is now available on many charmless two-body B decay channels, it is ...
متن کامل