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Publication Information
Title Scalar and tensor charmonium resonances in coupled-channel scattering from QCD
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.
Author(s) Robert Edwards, Jozef Dudek, David Wilson, Christopher Thomas
Publication Date June 2024
Document Type Journal Article
Primary Institution Thomas Jefferson National Accelerator Facility, Newport News
Affiliation Theory & Comp Physics / THEORY CENTER / THEORY CENTER
Funding Source Nuclear Physics (NP)
Proprietary? No
This publication conveys Technical Science Results
Document Numbers
JLAB Number: JLAB-THY-24-4081 OSTI Number: 2371624
LANL Number: arXiv:2309.14070 Other Number: DOE/OR/23177-7519
Associated with an experiment No
Associated with EIC No
Supported by Jefferson Lab LDRD Funding No
Journal Article
Journal Name Physical Review Letters
Refereed Yes
Volume 132
Issue 24
Page(s) 241901
Attachments/Datasets/DOI Link
Document(s)
PhysRevLett.132.241901.pdf (Accepted Manuscript)
DOI Link
Dataset(s) (none)
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