We estimate the masses of the 1-- heavy four-quark and molecule states bycombining exponential Laplace (LSR) and finite energy (FESR) sum rules knownperturbatively to lowest order (LO) in lpha_s but including non perturbativeterms up to the complete dimension-six condensate contributions. We use doubleratio of sum rules (DRSR) for determining the SU(3) breakings terms. The SU(3)mass-splittings of about (50 - 110) MeV and the ones of about (250 - 300) MeVbetween the lowest ground states and their 1st radial excitations are (almost)heavy-flavour independent. The mass predictions summarized in Table 2 arecompared with the ones in the literature (when available) and with the threeYc(4260, 4360, 4660) and Yb(10890) 1-- experimental candidates. We concludethat the lowest observed state cannot be a pure 1-- four-quark nor a puremolecule but may result from their mixings. We extend the above analyzes to the0++ four-quark and molecule states which are about (0.5-1.0) GeV heavier thanthe corresponding 1-- states, while the splittings between the 0++ lowestground state and the 1st radial excitation is about (300-500) MeV. We completethe analysis by estimating the decay constants of the 1-- and 0++ four-quarkstates. Our predictions can be tested using some alternative non-perturbativeapproaches or/and at LHCb or some other hadron factories.
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