$Z_S/Z_P$ from three-flavour lattice QCD

Anastassios Vladikas (INFN; Fabian Joswig (Muenster U.); Jochen Heitger (Muenster U.); Rome2 & Rome U.; Tor Vergata)

arxiv: 1810.03509 · v1 · pith:6BQLHVGInew · submitted 2018-10-08 · ✦ hep-lat

Z_S/Z_P from three-flavour lattice QCD

Jochen Heitger (Muenster U.) , Fabian Joswig (Muenster U.) , Anastassios Vladikas (INFN , Rome2 & Rome U. , Tor Vergata) This is my paper

classification ✦ hep-lat

keywords latticethree-flavouradvancesalongapplicationsapproachbelowboundary

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We report on advances in the non-perturbative determination of the ratio $Z_S/Z_P$ of the pseudoscalar to the scalar renormalization constants in three-flavour lattice QCD with Wilson-clover quarks and tree-level Symanzik improved gluons. The computations are based on the Ward identity approach, using Schr\"odinger functional boundary conditions. Our results for $Z_S/Z_P$ cover a range of couplings along a line of constant physics with lattice spacings of about 0.09 fm and below, relevant for phenomenological applications such as the calculation of renormalized quark masses.

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Z_S/Z_P from three-flavour lattice QCD

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