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http://hdl.handle.net/2445/131794
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DC Field | Value | Language |
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dc.contributor.author | Bazavov, Alexei | - |
dc.contributor.author | Garcia i Tormo, Xavier | - |
dc.contributor.author | Petreczky, Péter | - |
dc.contributor.author | Soto Riera, Joan | - |
dc.contributor.author | Vairo, Antonio | - |
dc.contributor.author | Brambilla, Nora | - |
dc.date.accessioned | 2019-04-08T12:10:25Z | - |
dc.date.available | 2019-04-08T12:10:25Z | - |
dc.date.issued | 2012-12-20 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/2445/131794 | - |
dc.description.abstract | We compare lattice data for the short-distance part of the static energy in 2+1 flavor quantum chromodynamics (QCD) with perturbative calculations, up to next-to-next-to-next-to leading-logarithmic accuracy. We show that perturbation theory describes very well the lattice data at short distances, and exploit this fact to obtain a determination of the product of the lattice scale r_0 with the QCD scale Lambda_{MS}. With the input of the value of r_0, this provides a determination of the strong coupling alpha_s at the typical distance scale of the lattice data. We obtain alpha_s(1.5 GeV)=0.326\pm0.019, which provides a novel determination of alpha_s at low energy and with three-loop accuracy (including resummation of the leading ultrasoft logarithms). When this value is evolved to the Z-mass scale M_Z, it corresponds to alpha_s(M_Z)=0.1156^{+0.0021}_{-0.0022}. | - |
dc.format.extent | 5 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.86.114031 | - |
dc.relation.ispartof | Physical Review D, 2012, vol. 86, num. 11, p. 114031 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevD.86.114031 | - |
dc.rights | (c) American Physical Society, 2012 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Física de partícules | - |
dc.subject.classification | Experiments | - |
dc.subject.other | Particle physics | - |
dc.subject.other | Experiments | - |
dc.title | Determination of αs from the QCD static energy | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 623778 | - |
dc.date.updated | 2019-04-08T12:10:25Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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623778.pdf | 156.04 kB | Adobe PDF | View/Open |
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