A PQCD calculation predicts branching fractions and CP asymmetries for B_s to scalar-pseudoscalar decays, with several modes sensitive to whether light scalars are quark-antiquark states.
Insight into the Scalar Mesons from a Lattice Calculation
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abstract
We study the possibility that the light scalar mesons are (qbar qbar q q) states rather than (qbar q). We perform a lattice QCD calculation of pseudoscalar meson scattering amplitudes, ignoring quark loops and quark annihilation, and find indications that for sufficiently heavy quarks there is a stable four-quark bound state with J^{PC}=0^{++} and non-exotic flavor quantum numbers.
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Systematic Analysis of $B_s \to SP$ Decays in Perturbative QCD Approach
A PQCD calculation predicts branching fractions and CP asymmetries for B_s to scalar-pseudoscalar decays, with several modes sensitive to whether light scalars are quark-antiquark states.