TY  - JOUR
AU  - Bruschini, R.
AU  - Gonzalez, P.
PY  - 2020
DA  - 2020//
TI  - Diabatic description of charmoniumlike mesons
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 074002
EP  - 19pp
VL  - 102
IS  - 7
PB  - Amer Physical Soc
AB  - 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.
SN  - 1550-7998
UR  - https://arxiv.org/abs/2007.07693
UR  - https://doi.org/10.1103/PhysRevD.102.074002
DO  - 10.1103/PhysRevD.102.074002
LA  - English
N1  - WOS:000576053400001
ID  - Bruschini+Gonzalez2020
ER  -