%0 Journal Article
%T Coupled-channel meson-meson scattering in the diabatic framework
%A Bruschini, R.
%A Gonzalez, P.
%J Physical Review D
%D 2021
%V 104
%N 7
%I Amer Physical Soc
%@ 2470-0010
%G English
%F Bruschini+Gonzalez2021
%O WOS:000753716600003
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5120), last updated on Mon, 21 Feb 2022 13:27:58 +0000
%X We apply the diabatic framework, a QCD-based formalism for the unified study of quarkoniumlike systems in terms of heavy quark-antiquark and open-flavor meson-meson components, to the description of coupled-channel meson-meson scattering. For this purpose, we first introduce a numerical scheme to find the solutions of the diabatic Schrodinger equation for energies in the continuum, then we derive a general formula for calculating the meson-meson scattering amplitudes from these solutions. We thus obtain a completely nonperturbative procedure for the calculation of open-flavor meson-meson scattering cross sections from the diabatic potential, which is directly connected to lattice QCD calculations. A comprehensive analysis of various elastic cross sections for open-charm and open-bottom meson-meson pairs is performed in a wide range of the center-of-mass energies. The relevant structures are identified, showing a spectrum of quasiconventional and unconventional quarkoniumlike states. In addition to the customary Breit-Wigner peaks, we obtain nontrivial structures such as threshold cusps and minimums. Finally, our results are compared with existing data and with results from our previous bound-state-based analysis, finding full compatibility with both.
%R 10.1103/PhysRevD.104.074025
%U https://arxiv.org/abs/2107.05459
%U https://doi.org/10.1103/PhysRevD.104.074025
%P 074025-16pp