TY  - JOUR
AU  - Yang, Z.
AU  - Cao, X.
AU  - Guo, F. K.
AU  - Nieves, J.
AU  - Pavon Valderrama, M.
PY  - 2021
DA  - 2021//
TI  - Strange molecular partners of the Z(c)(3900) and Z(c)(4020)
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 074029
EP  - 8pp
VL  - 103
IS  - 7
PB  - Amer Physical Soc
AB  - Quantum chromodynamics presents a series of exact and approximate symmetries which can be exploited to predict new hadrons from previously known ones. The Z(c)(3900) and Z(c)(4020), which have been theorized to be isovector D*(D) over bar and D*(D) over bar* molecules [I-G(J(PC)) = 1(-)(1)(+-))], are no exception. Here we argue that from SU(3)-flavor symmetry, we should expect the existence of strange partners of the Z(c)'s with hadronic molecular configurations D*(D) over bar (s) – D (D) over bar*(s) and D*(D) over bar*(s) (or, equivalently, quark content c (c) over bars (q) over bar, with q = u, d). The quantum numbers of these Z(cs) and Z(cs)* structures would be I(J(P)) = 1/2 (1(+)). The predicted masses of these partners depend on the details of the theoretical scheme used, but they should be around the D*(D) over bar (s) – D (D) over bar*(s) and D*(D) over bar*(s) thresholds, respectively. Moreover, any of these states could be either a virtual pole or a resonance. We show that, together with a possible triangle singularity contribution, such a picture nicely agrees with the very recent BESIII data of the e(+)e(-) -> K+((Ds-D*0) + D*D--(s)0).
SN  - 2470-0010
UR  - https://arxiv.org/abs/2011.08725
UR  - https://doi.org/10.1103/PhysRevD.103.074029
DO  - 10.1103/PhysRevD.103.074029
LA  - English
N1  - WOS:000648581900002
ID  - Yang_etal2021
ER  -