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VOLUME 100 | ISSUE 5 | PAGE 323
Final state interaction effects in B+→ D+K0 decay
In this research the exclusive decay of B+→ D+K0 is calculated by QCD factorization method (QCDF) and final state interaction (FSI). First, the B+→ D+K0 decay is calculated via QCDF method. The result that is found by using the QCDF method is less than the experimental result. So FSI is considered to solve the B+→ D+K0 decay. For this decay, the Ds+π0, Ds+*ρ0, Ds+*φ via the exchange of \bar{K}^0, {\bar{K}^0{}}^*, D-, and D-* mesons are chosen for the intermediate states. The above intermediate states are calculated by using the QCDF method. In the FSI effects, the results of our calculations depend on η as the phenomenological parameter. The range of this parameter is selected from 2 to 2.4. It is found that if η=2.4 is selected, the numbers of the branching ratio are placed in the experimental range. The experimental branching ratio of this decay is less than 2.9•10-6 and our results calculated by QCDF and FSI are (0.16\pm0.04)\cdot10^{-6} and (2.8\pm0.09)\cdot10^{-6} respectively.