B_s → S(a₀(1450),K*₀(1430),f₀(1500)) helicity form factors within QCD light-cone sum rules

In this paper, we investigate the helicity form factors (HFFs) of the B_(s)-meson decay into a scalar meson with a mass larger than 1 GeV, i.e., B → a₀(1450), B_(s) → K*₀(1430), and B_s → f₀(1500) by using the light-cone sum rules approach. We take the standard currents for correlation functions. To enhance the precision of our calculations, we incorporate the next-to-leading order (NLO) corrections and retain the scalar meson twist-3 light-cone distribution amplitudes. Furthermore, we extend the HFFs to the entire physical q² region employing a simplified z-series expansion. At the point of q² = 1GeV², all NLO contributions to the HFFs are negative, with the maximum contribution around 25%. Then, as applications of these HFFs, we analyze the differential decay widths, branching ratios, and lepton polarization asymmetries for the semileptonic (Formula presented)decays. Our results are consistent with existing studies within uncertainties. The current data still suffer from large uncertainties and need to be measured more precisely, which can lead to a better understanding of the fundamental properties of light scalar mesons.