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Mass of the b quark from lattice NRQCD and lattice perturbation theory
Lee, A. J. Monahan, C. J. Horgan, R. R. Monahan, C. J.
Lee, A. J.
Monahan, C. J.
Horgan, R. R.
Monahan, C. J.
Abstract
We present a determination of the b-quark mass accurate through O(alpha(2)(s)) in perturbation theory and including partial contributions at O(alpha(3)(s)). Nonperturbative input comes from the calculation of the Upsilon and B-s energies in lattice QCD, including the effect of u, d and s sea quarks. We use an improved NRQCD action for the b quark. This is combined with the heavy quark energy shift in NRQCD determined using a mixed approach of high-beta simulation and automated lattice perturbation theory. Comparison with experiment enables the quark mass to be extracted: in the (MS) over bar scheme we find (m) over bar (b)((m) over bar (b)) = 4.166(43) GeV. DOI: 10.1103/PhysRevD.87.074018
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2013-01-01
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Lee, A. J., Monahan, C. J., Horgan, R. R., Davies, C. T. H., Dowdall, R. J., Koponen, J., & HPQCD Collaboration. (2013). Mass of the b quark from lattice NRQCD and lattice perturbation theory. Physical Review D, 87(7), 074018.
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Physics
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https://doi.org/10.1103/PhysRevD.87.074018