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arXiv · 1810.03509

$Z_S/Z_P$ from three-flavour lattice QCD

Jochen Heitger·Fabian Joswig·Anastassios Vladikas
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Abstract

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 Schrödinger 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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Jochen Heitger, Fabian Joswig, Anastassios Vladikas. 2018-10-08. $Z_S/Z_P$ from three-flavour lattice QCD. https://arxiv.org/abs/1810.03509

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