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We study the indication of large different branching ratios between $B^{-}\toD^{(*)0} K^{-} {K}^{0}$ and $\bar{B}_{d}\to D^{(*)+} K^{-} {K}^{0}$ observed byBelle. Interestingly, the same situation is not found in the decays $B\toD^{(*)} K^{-} {K}^{*0}$. If there exist no intermediate resonances in thedecays $B^{-}\to D^{(*)0} K^{-} {K}^{0}$, a puzzle will be arisen. We find thatthe color-suppressed processes $B^{-}\to D^{(*)0}a^{-}_{0}(1450)$ with$a^{-}_{0}(1450)\to K^{-} {K}^{0}$ could be one of the candidates to enhancethe BRs of $B^{-}\to D^{(*)0} K^{-} {K}^{0}$. Our conjecture can be examined bythe Dalitz plot technique and the analysis of angular dependence on $K^{-}{K}^{0}$ state at $B$ factories.Comment: 9 pages, 1 figure, revtex4, to appear in Phys. Rev.

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

Are there significant scalar resonances in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mi>−</mml:mi></mml:mrow></mml:msup></mml:mrow><mml:mo>→</mml:mo><mml:mrow><mml:msup><mml:mrow><mml:mi>D</mml:mi></mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mi>*</mml:mi><mml:mo>)</mml:mo><mml:mn>0</mml:mn><mml:mn /></mml:mrow></mml:msup></mml:mrow><mml:mrow><mml:msup><mml:mrow><mml:mi>K</mml:mi></mml:mrow><…

Are there significant scalar resonances inB−→D(*)0K<…