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DOE OSTI · 2371895

Lattice B -field correlators for heavy quarks

Altenkort, Luis (ORCID:0000000193820208)·de la Cruz, David (ORCID:0000000268043002)·Kaczmarek, Olaf (ORCID:0000000269862341)·Moore, Guy D. (ORCID:0000000163946969)·Shu, Hai-Tao (ORCID:0000000171974281)
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Abstract

We analyze the color-magnetic (or “ B ”) field two-point function that encodes the finite-mass correction to the heavy-quark momentum-diffusion coefficient. The simulations are done on fine isotropic lattices in the quenched approximation at 1.5 T c , using a range of gradient flow times for noise suppression and operator renormalization. The continuum extrapolation is performed at fixed flow time followed by a second extrapolation to zero flow time. Perturbative calculations to next-to-leading order of this correlation function, matching gradient-flowed correlators to MS ¯ , are used to resolve nontrivial renormalization issues. We perform a spectral reconstruction based on perturbative model fits to estimate the coefficient κ B of the finite-mass correction to the heavy-quark momentum-diffusion coefficient. The approach we present here yields high-precision data for the correlator with all renormalization issues incorporated at next-to-leading order and is also applicable for actions with dynamical fermions. Published by the American Physical Society 2024

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73 NUCLEAR PHYSICS AND RADIATION PHYSICSlattice QCDquantum chromodynamicsquark-gluon plasma

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BibTeXRIS

Altenkort, Luis (ORCID:0000000193820208), de la Cruz, David (ORCID:0000000268043002), Kaczmarek, Olaf (ORCID:0000000269862341), Moore, Guy D. (ORCID:0000000163946969), Shu, Hai-Tao (ORCID:0000000171974281). 2024-06-10. Lattice B -field correlators for heavy quarks. https://doi.org/10.1103/physrevd.109.114505

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