$NJ/ψ$ and $Nη_c$ interactions from lattice QCD
Fuente:
arXiv
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866912214542188544 |
|---|---|
| author | Lyu, Yan Doi, Takumi Hatsuda, Tetsuo Sugiura, Takuya |
| author_facet | Lyu, Yan Doi, Takumi Hatsuda, Tetsuo Sugiura, Takuya |
| contents | The interaction between nucleon and charmonia ($J/ψ$ and $η_c$) is expected to deepen our understanding of various aspects in nonperturbative QCD ranging from the origin of nucleon mass to $J/ψ$ mass modification in nuclear medium and properties of hidden-charm pentaquark states. Here, we present the low-energy $NJ/ψ$ and $Nη_c$ interactions based on ($2+1$) flavor lattice QCD simulations with nearly physical pion mass $m_π=146$ MeV. The interactions, extracted from the spacetime correlations of the nucleon and charmonium system by using the HAL QCD method, are found to be attractive in all distances and manifest a characteristic long-range tail consistent with the two-pion exchange interaction. The resulting scattering lengths are around $0.3$ fm, $0.4$ fm and $0.2$ fm for $NJ/ψ$ with spin $3/2$, with spin $1/2$, and $Nη_c$, respectively. Our results are orders of magnitude larger than those from the photoproduction experiments assuming the vector meson dominance. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_00054 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | $NJ/ψ$ and $Nη_c$ interactions from lattice QCD Lyu, Yan Doi, Takumi Hatsuda, Tetsuo Sugiura, Takuya High Energy Physics - Lattice Nuclear Theory The interaction between nucleon and charmonia ($J/ψ$ and $η_c$) is expected to deepen our understanding of various aspects in nonperturbative QCD ranging from the origin of nucleon mass to $J/ψ$ mass modification in nuclear medium and properties of hidden-charm pentaquark states. Here, we present the low-energy $NJ/ψ$ and $Nη_c$ interactions based on ($2+1$) flavor lattice QCD simulations with nearly physical pion mass $m_π=146$ MeV. The interactions, extracted from the spacetime correlations of the nucleon and charmonium system by using the HAL QCD method, are found to be attractive in all distances and manifest a characteristic long-range tail consistent with the two-pion exchange interaction. The resulting scattering lengths are around $0.3$ fm, $0.4$ fm and $0.2$ fm for $NJ/ψ$ with spin $3/2$, with spin $1/2$, and $Nη_c$, respectively. Our results are orders of magnitude larger than those from the photoproduction experiments assuming the vector meson dominance. |
| title | $NJ/ψ$ and $Nη_c$ interactions from lattice QCD |
| topic | High Energy Physics - Lattice Nuclear Theory |
| url | https://arxiv.org/abs/2502.00054 |