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Anomalous dimension of the heavy-light quark current in HQET up to four loops
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abstract
The anomalous dimension of the heavy-light quark current in HQET is calculated up to four loops. The N$^3$LL perturbative correction to $f_B/f_D$ is obtained.
Forward citations
Cited by 3 Pith papers
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Beyond Scale Variations: Perturbative Theory Uncertainties from Nuisance Parameters
A framework that turns missing higher-order perturbative coefficients into fit-able theory nuisance parameters, giving correlated and statistically meaningful theory uncertainties.
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Quark Transverse Spin-Momentum Correlation of the Pion from Lattice QCD: The Boer-Mulders Function
The pion Boer-Mulders function is computed for the first time from lattice QCD and is found to decay with transverse separation, becoming compatible with zero around 0.5 to 0.6 fm.
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Correlators of heavy-light quark currents in HQET: Perturbative contribution up to 4 loops and beyond
New four-loop coefficient functions are presented for the HQET heavy-light current correlator with light-quark mass terms up to second order.
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