High-precision determination of the charm and bottom quark masses
Hadrons in a nonperturbative continuum approach to QCD beyond rainbows and ladders
| Grant number: | 16/01341-4 |
| Support Opportunities: | Scholarships in Brazil - Master |
| Effective date (Start): | March 01, 2016 |
| Effective date (End): | February 28, 2018 |
| Field of knowledge: | Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields |
| Principal Investigator: | Diogo Rodrigues Boito |
| Grantee: | Fabio Henrique Oliani |
| Host Institution: | Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil |
| Associated research grant: | 15/20689-9 - Precise determination of fundamental QCD parameters, AP.JP |
Abstract The hadronic tau decays are an important source of information about QCD since their description is theoretically clean. In particular, the strong coupling (alpha_s) can be extracted with competitive precision. However, a source of theoretical uncertainty persists, namely, what is the best prescription for the use of the renormalization group in the optimization of the perturbative series. In this work, we will use the method of Pade approximants to extract information about the perturbative series in intermediate and higher orders. The results should contribute to the solution of this ambiguity and therefore to improve the knowledge of alpha_s. (AU) | |
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