O(a) improvement of the HYP static axial and vector currents at one-loop order of perturbation theory

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dc.creatorGrimbach, A.
dc.creatorGuazzini, D.
dc.creatorKnechtli, F.
dc.creatorPalombi, F.
dc.date2008-02-06
dc.date.accessioned2026-07-07T11:40:09Z
dc.date.available2026-07-07T11:40:09Z
dc.descriptionWe calculate analytically the improvement coefficients of the static axial and vector currents in O(a) improved lattice QCD at one-loop order of perturbation theory. The static quark is described by the hypercubic action, previously introduced in the literature in order to improve the signal-to-noise ratio of static observables. Within a Schroedinger Functional setup, we derive the Feynman rules of the hypercubic link in time-momentum representation. The improvement coefficients are obtained from on-shell correlators of the static axial and vector currents. As a by-product, we localise the minimum of the static self-energy as a function of the smearing parameters of the action at one-loop order and show that the perturbative minimum is close to its non-perturbative counterpart.
dc.description24 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0802.0862
dc.identifierhttp://arxiv.org/abs/0802.0862
dc.identifierJHEP0803:039,2008
dc.identifierdoi:10.1088/1126-6708/2008/03/039
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200167
dc.subjectHigh Energy Physics - Lattice
dc.titleO(a) improvement of the HYP static axial and vector currents at one-loop order of perturbation theory
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