Measuring the QCD Gell-Mann–Low ψ function

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dc.contributor.authorBrodsky, S. J.
dc.contributor.authorMerino, C.
dc.contributor.authorPeláez Sagredo, José Ramón
dc.date.accessioned2023-06-20T20:13:24Z
dc.date.available2023-06-20T20:13:24Z
dc.date.issued1999-11-01
dc.description©1999 The American Physical Society. C.M. and J.R.P. thank the Theory Group at SLAC for their kind hospitality. J.R.P. acknowledges the Spanish Ministerio de Educación y Cultura for financial support, as well as the Departamento de Física de Partículas of the Universidade de Santiago de Compostela for its hospitality. We also thank M. Melles, J. Rathsman and N. Toumbas for helpful conversations. This research was partially supported by the Department of Energy under contract DE-AC03-76SF00515 and the Spanish CICYT under contracts AEN-96-1673, AEN97-1693.
dc.description.abstractWe present a general method for extracting the Gell-Mann-Low logarithmic derivative of an effective charge of an observable directly from data as a mean for empirically verifying the universal terms of the QCD beta function. Our method avoids the biases implicit in fitting to QCD-motivated forms as well as the interpolation errors introduced by constructing derivatives from discrete data. We also derive relations between moments of effective charges as new tests of perturbative QCD. [S0556-2821(99)00221-0].
dc.description.departmentDepto. de Física Teórica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipSpanish Ministerio de Educación y Cultura
dc.description.sponsorshipE.U. Department of Energy
dc.description.sponsorshipSpanish CICYT
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/35675
dc.identifier.doi10.1103/PhysRevD.60.114007
dc.identifier.issn0556-2821
dc.identifier.officialurlhttp://dx.doi.org/10.1103/PhysRevD.60.114007
dc.identifier.relatedurlhttp://journals.aps.org
dc.identifier.urihttps://hdl.handle.net/20.500.14352/59878
dc.issue.number11
dc.journal.titlePhysical review D
dc.language.isoeng
dc.publisherAmer Physical Soc
dc.relation.projectIDDE-AC03-76SF00515
dc.relation.projectIDAEN-96-1673
dc.relation.projectIDAEN97-1693
dc.rights.accessRightsopen access
dc.subject.cdu538.9
dc.subject.keywordFree gauge theories
dc.subject.keywordRenormalization- scheme
dc.subject.keywordQuantum chromodynamics
dc.subject.keywordEffective charges
dc.subject.keywordDecay
dc.subject.ucmFísica de materiales
dc.subject.ucmFísica del estado sólido
dc.subject.unesco2211 Física del Estado Sólido
dc.titleMeasuring the QCD Gell-Mann–Low ψ function
dc.typejournal article
dc.volume.number60
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dspace.entity.typePublication
relation.isAuthorOfPublication70900239-cb8b-49f3-931f-9dc6a8b7d8d5
relation.isAuthorOfPublication.latestForDiscovery70900239-cb8b-49f3-931f-9dc6a8b7d8d5

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