Quark mass determinations with the RI-SMOM scheme and HISQ action
Autor: | Lytle, A. T., Davies, C. T. H., Hatton, D., Lepage, G. P., Sturm, C. |
---|---|
Rok vydání: | 2019 |
Předmět: | |
Druh dokumentu: | Working Paper |
Popis: | Lattice QCD provides several avenues for the high precision determination of quark masses. Using the RI-SMOM scheme applied to lattice calculations with the HISQ action, we obtain mass renormalisation factors that we use to provide strange and charm quark masses with 1% precision. The calculation involves the study of various sources of systematic uncertainty, including an analysis of possible nonperturbative (condensate) contributions. These results allow a comparison of different mass determination methods of comparable precision. In particular we (HPQCD) find good agreement between RI-SMOM and current-current correlator determinations based on the same lattice QCD bare masses, providing a strong test of our understanding of systematic uncertainties. Comment: Proceedings from Lattice 2018 |
Databáze: | arXiv |
Externí odkaz: |