Non-perturbative renormalization of the static vector current and its O(a)-improvement in quenched QCD

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dc.creatorPalombi, Filippo
dc.date2007-06-17
dc.date2008-01-04
dc.date.accessioned2026-07-07T11:16:56Z
dc.date.available2026-07-07T11:16:56Z
dc.descriptionWe carry out the renormalization and the Symanzik O(a)-improvement programme for the static vector current in quenched lattice QCD. The scale independent ratio of the renormalization constants of the static vector and axial currents is obtained non-perturbatively from an axial Ward identity with Wilson-type light quarks and various lattice discretizations of the static action. The improvement coefficients cVstat and bVstat are obtained up to O(g_0^4)-terms by enforcing improvement conditions respectively on the axial Ward identity and a three-point correlator of the static vector current. A comparison between the non-perturbative estimates and the corresponding one-loop results shows a non-negligible effect of the O(g_0^4)-terms on the improvement coefficients but a good accuracy of the perturbative description of the ratio of the renormalization constants.
dc.description28 pages, 10 figures; two paragraphs added at the end of sect. 5; version as accepted for publication in JHEP
dc.identifierhttps://arxiv.org/abs/0706.2460
dc.identifierhttp://arxiv.org/abs/0706.2460
dc.identifierJHEP0801:021,2008
dc.identifierdoi:10.1088/1126-6708/2008/01/021
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192841
dc.subjectHigh Energy Physics - Lattice
dc.titleNon-perturbative renormalization of the static vector current and its O(a)-improvement in quenched QCD
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