2016/06/30 by Zhi-Gang Wang
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1140/epjc/s10052-017-4640-0
published as Eur. Phys. J. C77 (2017) 78 · 15 pages, 2 figures, correct some typing errors. arXiv admin note: text overlap with arXiv:1502.04619, arXiv:1607.00701, arXiv:1312.1537
arxiv created 2018/12/13 · arxiv updated 2018/12/17
In this article, we tentatively assign the X(3915) and X(4500) to be the ground state and the first radial excited state of the axialvector-diquark-axialvector-antidiquark type scalar cscs tetraquark states, respectively, assign the X(4700) to be the ground state vector-diquark-vector-antidiquark type scalar cscs tetraquark state, and study their masses and pole residues with the QCD sum rules in details by calculating the contributions of the vacuum condensates up to dimension 10. The numerical results support assigning the X(3915) and X(4500) to be the ground state and the first radial excited state of the axialvector-diquark-axialvector-antidiquark type scalar cscs tetraquark states, respectively, and assigning the X(4700) to be the ground state vector-diquark-vector-antidiquark type scalar cscs tetraquark state.