
VOLUME 100 (2014)  ISSUE 5 
PAGE 323

Final state interaction effects in B^{+}→ D^{+}K^{0} decay
H. Mehraban, M. Borhani, A. Asadi
Physics Department, Semnan University, 35195363 Semnan, Iran
Abstract
In this research the exclusive decay of
B^{+}→ D^{+}K^{0} is calculated by QCD factorization method
(QCDF) and final state interaction (FSI). First, the B^{+}→ D^{+}K^{0}
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^{+}K^{0} decay.
For this decay, the D_{s}^{+}π^{0}, D_{s}^{+}^{*}ρ^{0}, D_{s}^{+}^{*}φ
via the exchange of
,
,
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
and respectively.

