Three-gluon running coupling from lattice QCD at Nf = 2 + 1 + 1: a consistency check of the OPE approach
We present a lattice calculation of the renormalized running coupling constant in symmetric (MOM) and asymmetric (^MOM) momentum substraction schemes including u, d, s and c quarks in the sea. An Operator Product Expansion dominated by the dimension-two hA2i condensate is used to fit the running of...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | Universidad de Huelva (UHU) |
| Repositorio: | Arias Montano. Repositorio Institucional de la Universidad de Huelva |
| Idioma: | inglés |
| OAI Identifier: | oai:ariasmontano.uhu.es:10272/10492 |
| Acceso en línea: | http://hdl.handle.net/10272/10492 |
| Access Level: | acceso abierto |
| Palabra clave: | Lattice QCD Sum Rules QCD |
| Sumario: | We present a lattice calculation of the renormalized running coupling constant in symmetric (MOM) and asymmetric (^MOM) momentum substraction schemes including u, d, s and c quarks in the sea. An Operator Product Expansion dominated by the dimension-two hA2i condensate is used to fit the running of the coupling. We argue that the agreement in the predicted hA2i condensate for both schemes is a strong support for the validity of the OPE approach and the effect of this non-gauge invariant condensate over the running of the strong coupling. |
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