TY - JOUR
T1 - Zc(3900) from coupled-channel HAL QCD approach on the lattice
AU - Ikeda, Yoichi
N1 - Funding Information:
The authors thank Drs. T. Matsuki, M. Oka, S. Takeuchi, M. Takizawa and S. Yasui for fruitful discussions. We also thank the PACS-CS Collaboration and ILDG/JLDG [36] for providing us with full QCD gauge configurations used in this study. Numerical calculations were carried out on NEC-SX9 and SX8R at Osaka University and SR16000 at YITP in Kyoto University. This project is supported in part by by Grant-in-Aid for Scientific Research on Innovative Areas(No.2004:20105001, 20105003) and for Scientific Research(No. 25800170), and SPIRE (Strategic Program for Innova-Tive REsearch).
Funding Information:
The authors thank Drs. T. Matsuki, M. Oka, S. Takeuchi, M. Takizawa and S. Yasui for fruitful discussions. We also thank the PACS-CS Collaboration and ILDG/JLDG [36] for providing us with full QCD gauge configurations used in this study. Numerical calculations were carried out on NEC-SX9 and SX8R at Osaka University and SR16000 at YITP in Kyoto University. This project is supported in part by by Grant-in-Aid for Scientific Research on Innovative Areas(No.2004:20105001, 20105003) and for Scientific Research(No. 25800170), and SPIRE (Strategic Program for Innovative REsearch).
PY - 2015
Y1 - 2015
N2 - The structure of the Zc(3900) is studied from dynamical lattice simulations of QCD at mπ ≃ 410MeV. The s-wave two-body coupled-channel scatterings in IG(JPC) = 1+(1+-) are carried out on the lattice using the πJ/Ψ-Pn-DD∗ coupled-channel potentials derived from the HAL QCD approach. The calculated invariant mass spectra of the πJ=y and DD∗ show enhancements just above the DD∗ threshold energy due to the strong transition potentials between the πJ=y and DD∗. The poles of the two-body amplitudes are also examined and are found far below the DD∗ threshold energy on the second Riemann sheets, so that the peak corresponding to the Zc(3900) in the invariant mass spectra is naturally explained by not a conventional resonance but a coupled-channel kinematical effects.
AB - The structure of the Zc(3900) is studied from dynamical lattice simulations of QCD at mπ ≃ 410MeV. The s-wave two-body coupled-channel scatterings in IG(JPC) = 1+(1+-) are carried out on the lattice using the πJ/Ψ-Pn-DD∗ coupled-channel potentials derived from the HAL QCD approach. The calculated invariant mass spectra of the πJ=y and DD∗ show enhancements just above the DD∗ threshold energy due to the strong transition potentials between the πJ=y and DD∗. The poles of the two-body amplitudes are also examined and are found far below the DD∗ threshold energy on the second Riemann sheets, so that the peak corresponding to the Zc(3900) in the invariant mass spectra is naturally explained by not a conventional resonance but a coupled-channel kinematical effects.
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M3 - Conference article
AN - SCOPUS:84988637985
SN - 1824-8039
VL - 14-18-July-2015
JO - Proceedings of Science
JF - Proceedings of Science
M1 - 091
T2 - 33rd International Symposium on Lattice Field Theory, LATTICE 2015
Y2 - 14 July 2015 through 18 July 2015
ER -