| Texto completo | |
| Autor(es): |
Boito, Diogo
;
Golterman, Maarten
;
Keshavarzi, Alexander
;
Maltman, Kim
;
Nomura, Daisuke
;
Peris, Santiago
;
Teubner, Thomas
Número total de Autores: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | EUROPEAN PHYSICAL SOCIETY CONFERENCE ON HIGH ENERGY PHYSICS, EPS-HEP2019; v. N/A, p. 7-pg., 2020-01-01. |
| Resumo | |
We present our recent results on the extraction of the strong coupling, alpha(s), from a new compilation of the hadronic R-ratio obtained from the available data for e(+)e(-) -> hadrons. The determination uses all data up to s = 4 GeV2, where s is the square of the center-of-mass energy. We obtain competitive values with only a small contamination from non-perturbative effects and with smaller theoretical uncertainties than the extractions from hadronic tau decays. (AU) | |
| Processo FAPESP: | 15/20689-9 - Determinação precisa de parâmetros fundamentais da QCD |
| Beneficiário: | Diogo Rodrigues Boito |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores |