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QCD FACTORIZATION IN HADRONIC B J/ ( ,K) DECAYS* | ||
| Iranian Journal of Science | ||
| مقاله 2، دوره 34، شماره 4، اسفند 2010، صفحه 285-303 اصل مقاله (306.4 K) | ||
| نوع مقاله: Regular Paper | ||
| شناسه دیجیتال (DOI): 10.22099/ijsts.2010.2179 | ||
| نویسندگان | ||
| H. MEHRBAN* ؛ M. SAYAHI | ||
| Physics Department, Semnan University, Semnan, I. R. of Iran | ||
| چکیده | ||
| Using QCD factorization for the hadronic matrix elements, we show that existing data, in particular the branching ratios BR ( B →J/ψK) and BR ( B →J/ψπ), can be accounted for in this approach. We analyze the decay B J /K( ) within the framework of QCD factorization. The calculation of the relevant hard-scattering kernels for twist-2 and twist-3 is completed. We calculate this decay in a special scale ( mb ) and in two schemes for Wilson coefficients in NLO. We consider three functions for J / . The twist-3 contribution involves the logarithmically divergent integral, we consider H 0 the canceling divergent. The obtained results are in agreement with available experimental data. | ||
| کلیدواژهها | ||
| B Meson؛ hard scattering؛ QCD factorization؛ 2 and 3-twist | ||
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