Are there significant scalar resonances in $B^{-}\to D^{(*)0} K^{-} {K}^{0}$ decays?

Details Are there significant scalar resonances in $B^{-}\to D^{(*)0} K^{-} {K}^{0}$ decays? Are there significant scalar resonances in $B^{-}\to D^{(*)0} K^{-} {K}^{0}$ decays?

2004-01-14

arxiv.org/abs/hep-ph/0401100v1

Phys.Rev. D69 (2004) 057504

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 1 figure, revtex4, to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.69.057504

We study the indication of large different branching ratios between $B^{-}\to D^{(*)0} K^{-} {K}^{0}$ and $\bar{B}_{d}\to D^{(*)+} K^{-} {K}^{0}$ observed by Belle. Interestingly, the same situation is not found in the decays $B\to D^{(*)} K^{-} {K}^{*0}$. If there exist no intermediate resonances in the decays $B^{-}\to D^{(*)0} K^{-} {K}^{0}$, a puzzle will be arisen. We find that the 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 enhance the BRs of $B^{-}\to D^{(*)0} K^{-} {K}^{0}$. Our conjecture can be examined by the Dalitz plot technique and the analysis of angular dependence on $K^{-} {K}^{0}$ state at $B$ factories.

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