PoS - Proceedings of Science
Volume 363 - 37th International Symposium on Lattice Field Theory (LATTICE2019) - Main session
χSF near the electroweak scale
M. DallaBrida, I. Campos Plasencia, G. Divitiis, A. Lytle*, M. Papinutto and A. Vladikas
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Pre-published on: December 05, 2019
Published on: August 27, 2020
Abstract
We employ the chirally rotated Schr\"odinger functional (χSF) to study two-point fermion bilinear correlation functions used in the determination of ZA,V,S,P,T on a series of well-tuned ensembles. The gauge configurations, which span renormalisation scales from 4 to 70~GeV, are generated with Nf=3 massless flavors and Schr\"odinger Functional (SF) boundary conditions. Valence quarks are computed with χSF boundary conditions. We show preliminary results on the tuning of the χSF Symanzik coefficient zf and the scaling of the axial current normalization ZA. Moreover we carry out a detailed comparison with the expectations from one-loop perturbation theory. Finally we outline how automatically O(a)-improved BK matrix elements, including BSM contributions, can be computed in a χSF renormalization scheme.
DOI: https://doi.org/10.22323/1.363.0202
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