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arXiv · 1702.01498

Determination of charm quark mass from temporal moments of charmonium correlator with Mobius domain-wall fermion

Katsumasa Nakayama·Brendan Fahy·Shoji Hashimoto
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Abstract

We extract the charm quark mass and the strong coupling constant from the charmonium current correlators calculated with $n_f = 2 + 1$ Mobius domain wall fermions. We match our lattice calculation for the temporal moments of the correlator with perturbative result known up to four-loop order, and extract the charm quark mass with uncertainty less than 1%. Using the temporal moments, we also confirm the correlators in the vector channel to be consistent with the experimental data for the R-ratio. We used the ensembles generated by the JLQCD collaboration at lattice spacings $a$ = 0.080 fm, 0.055 fm and 0.044 fm.

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Katsumasa Nakayama, Brendan Fahy, Shoji Hashimoto. 2017-02-06. Determination of charm quark mass from temporal moments of charmonium correlator with Mobius domain-wall fermion. https://arxiv.org/abs/1702.01498

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