Publications
Publication Information
| Title | Color Halo Scenario of Charmonium-like Hybrids |
| Authors | Yunheng Ma, Wei Sun, Ying Chen, Ming Gong, Zhaofeng Liu |
| JLAB number | JLAB-THY-21-3605 |
| LANL number | arXiv:1910.09819 |
| Other number | DOE/OR/23177-5777 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Chinese Physics C Volume 45 Issue 9 | |
| Publication Abstract: | The internal structures of J P C = 1??,(0, 1, 2)?+ charmonium-like hybrids are investigated under lattice QCD in the quenched approximation. We define the Bethe-Salpeter wave function ?n(r) in the Coulomb gauge as the matrix element of a spatially extended hybrid- like operator ¯ccg between the vacuum and n-th state for each J P C with r being the spatial separation between a localized ¯cc component and the chromomagnetic strength tensor. These wave functions exhibit some similarities for states with the aforementioned different quantum numbers, and their r-behaviors (no node for the ground states and one node for the first excited states) imply that r can be a meaningful dynamical variable for these states. Additionally, the mass splittings of the ground states and first excited states of charmonium-like hybrids in these channels are obtained for the first time to be approximately 1.2- 1.4 GeV. These results do not support the flux-tube description of heavy-quarkonium-like hybrids in the Born-Oppenheimer approximation. In contrast, a charmonium-like hybrid can be viewed as a ?color halo? charmonium for which a relatively localized color octet ¯cc is surrounded by gluonic degrees of freedom, which can readily decay into a charmonium state along with one or more light hadrons. The color halo picture is compatible with the decay properties of Y (4260) and suggests LHCb and BelleII to search for (0, 1, 2)?+ charmonium-like hybrids in ?c0,1,2? and J/??(?) final states. |
| Experiment Numbers: | |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | http://dx.doi.org/10.1088/1674-1137/ac0ee2 |
| Accepted Manuscript: | Ma_2021_Chinese_Phys._C_45_093111.pdf |
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| Supporting Datasets: | |