B(s)→S(a0(1450), K0*(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)→K0*(1430), and Bs→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=1 GeV2, 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 B(s)→Sℓν¯ℓ, FCNC B(s)→Sℓℓ¯ and rare B(s)→Sνν¯ 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.