Relativistic corrections to the static energy in terms of Wilson loops at weak coupling
We consider the O(1/m)O(1/m) and the spin-independent momentum-dependent O(1/m2)O(1/m2) quasi-static energies of heavy quarkonium (with unequal masses). They are defined nonperturbatively in terms of Wilson loops. We determine their short-distance behavior through O(α3)O(α3) and O(α2)O(α2) , respect...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/100989 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/100989 |
| Access Level: | acceso abierto |
| Palabra clave: | 53 Heavy-quarkonium spectrum Potential NRQCD QCD Física (Física) 2290 Física Altas Energías |
| Sumario: | We consider the O(1/m)O(1/m) and the spin-independent momentum-dependent O(1/m2)O(1/m2) quasi-static energies of heavy quarkonium (with unequal masses). They are defined nonperturbatively in terms of Wilson loops. We determine their short-distance behavior through O(α3)O(α3) and O(α2)O(α2) , respectively. In particular, we calculate the ultrasoft contributions to the quasi-static energies, which requires the resummation of potential interactions. Our results can be directly compared to lattice simulations. In addition, we also compare the available lattice data with the expectations from effective string models for the long-distance behavior of the quasi-static energies. |
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