2016年12月
Fate of the Tetraquark Candidate Z(c)(3900) from Lattice QCD
PHYSICAL REVIEW LETTERS
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- 巻
- 117
- 号
- 24
- 開始ページ
- 242001
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevLett.117.242001
- 出版者・発行元
- AMER PHYSICAL SOC
The possible exotic meson Z(c)(3900), found in e(+)e(-) reactions, is studied by the method of coupled-channel scattering in lattice QCD. The interactions among pi J/psi, rho eta(c), and (D) over barD* channels are derived from (2 + 1)-flavor QCD simulations at m(pi) = 410-700 MeV. The interactions are dominated by the off-diagonal pi J/psi-(D) over barD* and rho eta(c)-(D) over barD* couplings, which indicates that the Z(c)(3900) is not a usual resonance but a threshold cusp. Semiphenomenological analyses with the coupled-channel interaction are also presented to confirm this conclusion.
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevLett.117.242001
- ISSN : 0031-9007
- eISSN : 1079-7114
- Web of Science ID : WOS:000389576600004