Publications
Publication Information
| Title | Scalar and tensor charmonium resonances in coupled-channel scattering from QCD |
| Authors | Robert Edwards, Jozef Dudek, David Wilson, Christopher Thomas |
| JLAB number | JLAB-THY-24-4081 |
| LANL number | arXiv:2309.14070 |
| Other number | DOE/OR/23177-7519 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Physical Review Letters Volume 132 Issue 24 Page(s) 241901 Refereed | |
| Publication Abstract: | We determine JPC=++ and 2++ hadron-hadron scattering amplitudes in the charmonium energy region up to 4100 MeV using lattice QCD, a first-principles approach to QCD. Working at m_pi~391 MeV, more than 200 finite-volume energy levels are computed and these are used in extensions of the Lüscher formalism to determine infinite-volume coupled-channel scattering amplitudes. We find that this energy region contains a single chi_c0 and a single chi_c2 resonance. Both are found as pole singularities on the closest unphysical Riemann sheet, just below 4000 MeV with widths around 70 MeV. The largest couplings are to kinematically-closed D*Dbar* channels in S-wave, and couplings to several decay channels consisting of pairs of open-charm mesons are found to be large and significant in both cases. Above the ground state chi_c0, no other scalar bound-states or near-D*Dbar threshold resonances are found, in contrast to several theoretical and experimental studies. |
| Experiment Numbers: | other |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevLett.132.241901 |
| Accepted Manuscript: | PhysRevLett.132.241901.pdf |
| Supporting Documents: | |
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