TY  - JOUR
AU  - Du, M. L.
AU  - Albaladejo, M.
AU  - Guo, F. K.
AU  - Nieves, J.
PY  - 2022
DA  - 2022//
TI  - Combined analysis of the Z(c)(3900) and the Z(cs)(3985) exotic states
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 074018
EP  - 20pp
VL  - 105
IS  - 7
PB  - Amer Physical Soc
AB  - We have performed a combined analysis of the BESIII data for both the Z(c)(3900) and Z(cs)(3985) structures, assuming that the latter is an SU(3) flavor partner of the former one. We have improved on the previous analysis of Albaladejo et al. [Phys. Lett. B 755, 337 (2016)] by computing the amplitude for the D-1(D) over barD* triangle diagram considering both D- and S-wave D1D*x couplings. We have also investigated effects from SU(3) light-flavor violations, which are found to be moderate and of the order of 20%. The successful reproduction of the BESIII spectra, in both the hidden-charm and hidden-charm strange sectors, strongly supports that the Z(cs)(3985) and Z(c)(3900) are SU(3) flavor partners placed in the same octet multiplet. The best results are obtained when an energy-dependent term in the diagonal D(*) (D) over bar ((s))((*)) interaction is included, leading to resonances (poles above the thresholds) to describe these exotic states. We have also made predictions for the isovector Z*c and isodoublet Z*(cs), D*(D) over bar*, and D*??D*s molecules, with J(PC) = 1(+-) and J(P) = 1(+), respectively. These states would be heavy-quark spin symmetry (HQSS) partners of the Z(c) and Z(cs). Besides the determination of the masses and widths of the Z(c)(3900) and Z(cs)(3985), we also predict those of the Z*(c) and Z*(cs) resonances.
SN  - 2470-0010
UR  - https://arxiv.org/abs/2201.08253
UR  - https://doi.org/10.1103/PhysRevD.105.074018
DO  - 10.1103/PhysRevD.105.074018
LA  - English
N1  - WOS:000809663000012
ID  - Du_etal2022
ER  -