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2009

Distinguishing two kinds of scalar mesons from heavy meson decays

Wang, Wei, Lü, Cai-Dian

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In the SU(3) symmetry limit, semileptonic $D^+\to Sl^+\nu$ and $B^-\to Sl^-\bar\nu$ decays, with $S=a_0(980)$, $f_0(980)$ and $f_0(600)$, are found to obey different sum rules in the $\bar qq$ and the tetra-quark descriptions for scalar mesons.

Thus these sum rules can distinguish the two scenarios for light scalar mesons model-independently.
This method also applies to the $\bar B^0\to J/\psi(\eta_c) S$ decays.
Two kinds of SU(3) symmetry breaking effects are found to be under control, which will not spoil our method.

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