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HQET renormalization group improved Lagrangian at $\mathcal{O}(1/m^3)$ with leading logarithmic accuracy: Spin-dependent case

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arxiv 1802.07767 v1 pith:2KAPAZLX submitted 2018-02-21 hep-ph

Xabier Lobregat , Daniel Moreno , Rudin Petrossian-Byrne This is my paper · ORCID
classification hep-ph
keywords casegroupimprovedlagrangianleadinglogarithmicrenormalizationspin-dependent
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abstract

We obtain the renormalization group improved expressions of the Wilson coefficients associated to the ${\cal O}(1/m^3)$ spin-dependent heavy quark effective theory Lagrangian operators, with leading logarithmic approximation, in the case of zero light quarks. We have employed the Coulomb gauge.

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