The $η_c$-meson leading-twist distribution amplitude
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2024
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866916399960555520 |
|---|---|
| author | Blossier, Benoît Mangin-Brinet, Mariane Chávez, José Manuel Morgado José, Teseo San |
| author_facet | Blossier, Benoît Mangin-Brinet, Mariane Chávez, José Manuel Morgado José, Teseo San |
| contents | In this project, we employ the short-distance factorization to compute the distribution amplitude of the $η_c$-meson from Lattice QCD at leading twist. We employ a set of CLS $N_f=2$ ensembles at three lattice spacings and various quark masses to extrapolate the pseudo distribution to the physical point in the isospin limit. We solve the inverse problem modeling the distribution amplitude, and we match our results to the light-cone in the $\overline{\text{MS}}$-scheme. We include a complete error budget, and we compare to two alternative approaches: non-relativistic QCD and Dyson-Schwinger equations, finding good agreement with the latter but not with the former. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_12084 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The $η_c$-meson leading-twist distribution amplitude Blossier, Benoît Mangin-Brinet, Mariane Chávez, José Manuel Morgado José, Teseo San High Energy Physics - Lattice In this project, we employ the short-distance factorization to compute the distribution amplitude of the $η_c$-meson from Lattice QCD at leading twist. We employ a set of CLS $N_f=2$ ensembles at three lattice spacings and various quark masses to extrapolate the pseudo distribution to the physical point in the isospin limit. We solve the inverse problem modeling the distribution amplitude, and we match our results to the light-cone in the $\overline{\text{MS}}$-scheme. We include a complete error budget, and we compare to two alternative approaches: non-relativistic QCD and Dyson-Schwinger equations, finding good agreement with the latter but not with the former. |
| title | The $η_c$-meson leading-twist distribution amplitude |
| topic | High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2409.12084 |