%0 Journal Article
%T Diabatic description of charmoniumlike mesons
%A Bruschini, R.
%A Gonzalez, P.
%J Physical Review D
%D 2020
%V 102
%N 7
%I Amer Physical Soc
%@ 1550-7998
%G English
%F Bruschini+Gonzalez2020
%O WOS:000576053400001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4558), last updated on Wed, 21 Oct 2020 14:53:45 +0000
%X We apply the diabatic formalism, first introduced in molecular physics, to the description of heavy-quark mesons. In this formalism the dynamics is completely described by a diabatic potential matrix whose elements can be derived from unquenched lattice QCD studies of string breaking. For energies far below the lowest open flavor meson-meson threshold, the resulting diabatic approach reduces to the well-known Born-Oppenheimer approximation where heavy-quark meson masses correspond to energy levels in an effective quark-antiquark potential. For energies close below or above that threshold, where the Born-Oppenheimer approximation fails, this approach provides a set of coupled Schrodinger equations incorporating meson-meson components nonperturbatively, i.e., beyond loop corrections. A spectral study of heavy mesons containing c (c) over bar with masses below 4.1 GeV is carried out within this framework. From it a unified description of conventional as well as unconventional resonances comes out.
%R 10.1103/PhysRevD.102.074002
%U https://arxiv.org/abs/2007.07693
%U https://doi.org/10.1103/PhysRevD.102.074002
%P 074002-19pp