FLAG review 2019: Flavour lattice Averaging Group (FLAG)

Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UA

A comparison of Wilson and twisted mass valence quarks for charmed semileptonic form factors

39th International Symposium on Lattice Field Theory, LATTICE 2022 Bonn 8 August 2022 through 13 August 2022 Code 187776We present two calculations of heavy quark physics, with respectively non-perturbatively improved Wilson and twisted mass Wilson fermions, both on Nf = 2 + 1 CLS configurations with open boundary conditions. We evaluate those discretisations through a Ward identity on the three-point functions. We also check the universality of our continuum results. All our results are compatible with an O (a2) scaling for both action

Towards precision charm physics with a mixed action

39th International Symposium on Lattice Field Theory, LATTICE 2022 Bonn 8 August 2022 through 13 August 2022 Code 187776We report on our first set of results for charm physics, using a mixed-action setup with maximally twisted valence fermions on CLS Nf = 2+1 ensembles. This setup avoids the need of improvement coefficients to subtract O (amc) effects. The charm quark mass, D and Ds decay constants are computed on a subset of CLS ensembles, which allows to take the continuum limit and extrapolate to the physical pion mass, and assess the scaling properties. Special attention is paid to the implementation of techniques to deal with systematic uncertainties. Our results show excellent prospects for high-precision computations on the full set of ensemblesWe acknowledge PRACE and RES for giving us access to computational resources at MareNostrum (BSC). We thank CESGA for granting access to Finis Terrae II. This work is supported by the European Union’s Horizon 2020 research and innovation programme under grant agreement No 813942 and by the Spanish MINECO through project PGC2018-094857-B-I00, the Centro de Excelencia Severo Ochoa Programme through SEV-2016-0597 and the Ramón y Cajal Programme RYC-2012-024