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arXiv · 1607.02405

Interpretation of Axial Resonances in J/psi-phi at LHCb

L. Maiani·A. D. Polosa·V. Riquer
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Abstract

We suggest that the J/psi phi structures observed by LHCb can be fitted in two tetraquak multiplets, the S-wave ground state and the first radial excitation, with composition [cs][cbar sbar]. When compared to the previously identified [cq][cbar qbar] multiplet, the observed masses agree with what expected for a multiplet with q -->s. We propose the X(4274), fitted by LHCb with a single 1^++ resonance, to correspond rather to two, almost degenerate, unresolved lines with J^PC = 0^++, 2^++. Masses of missing particles in the 1S and 2S multiplets are predicted.

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L. Maiani, A. D. Polosa, V. Riquer. 2016-07-08. Interpretation of Axial Resonances in J/psi-phi at LHCb. https://doi.org/10.1103/physrevd.94.054026

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