Strong Running Coupling from the Gauge Sector of Domain Wall Lattice QCD with Physical Quark Masses
We report on the first computation of the strong running coupling at the physical point (physical pion mass) from the ghost-gluon vertex, computed from lattice simulations with three flavors of domain wall fermions. We find MSðm2 ZÞ ¼ 0.1172ð11Þ, in remarkably good agreement with the world-wide aver...
| Autores: | , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Recursos: | Universidad de Huelva (UHU) |
| Repositorio: | Arias Montano. Repositorio Institucional de la Universidad de Huelva |
| Idioma: | inglés |
| OAI Identifier: | oai:ariasmontano.uhu.es:10272/18370 |
| Acesso em linha: | http://hdl.handle.net/10272/18370 |
| Access Level: | acceso abierto |
| Palavra-chave: | Gauge Sector Domain Wall Lattice QCD Physical Quark Masses |
| Resumo: | We report on the first computation of the strong running coupling at the physical point (physical pion mass) from the ghost-gluon vertex, computed from lattice simulations with three flavors of domain wall fermions. We find MSðm2 ZÞ ¼ 0.1172ð11Þ, in remarkably good agreement with the world-wide average. Our computational bridge to this value is the Taylor-scheme strong coupling, which has been revealed of great interest by itself because it can be directly related to the quark-gluon interaction kernel in continuum approaches to the QCD bound-state problem. |
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