Violations of local duality in the heavy quark sector

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dc.contributor.authorColangelo, P
dc.contributor.authorDominguez, C A
dc.contributor.authorNardulli, G
dc.date.accessioned2021-10-08T07:11:39Z
dc.date.available2021-10-08T07:11:39Z
dc.date.issued1997
dc.description.abstractWe examine the origin of possible failures of the quark-hadron local duality. In particular, we consider a correlator of two currents comprising heavy quark operators, and compare the evaluation by the Operator Product Expansion with the result obtained inserting an infinite set of hadronic states, in the Nc → ∞ limit. Whereas the smeared spectral functions agree with each other, their local behaviour is different. The difference manifests itself in the form of a term () (ϵ being the residual energy) that is not present in the expansion in powers of predicted by the OPE.
dc.identifier.apacitationColangelo, P., Dominguez, C. A., & Nardulli, G. (1997). Violations of local duality in the heavy quark sector. <i>Physics Letters, B</i>, 409(43104), 417 - 424. http://hdl.handle.net/11427/34661en_ZA
dc.identifier.chicagocitationColangelo, P, C A Dominguez, and G Nardulli "Violations of local duality in the heavy quark sector." <i>Physics Letters, B</i> 409, 43104. (1997): 417 - 424. http://hdl.handle.net/11427/34661en_ZA
dc.identifier.citationColangelo, P., Dominguez, C.A. & Nardulli, G. 1997. Violations of local duality in the heavy quark sector. <i>Physics Letters, B.</i> 409(43104):417 - 424. http://hdl.handle.net/11427/34661en_ZA
dc.identifier.issn0370-2693
dc.identifier.issn1873-2445
dc.identifier.ris TY - Journal Article AU - Colangelo, P AU - Dominguez, C A AU - Nardulli, G AB - We examine the origin of possible failures of the quark-hadron local duality. In particular, we consider a correlator of two currents comprising heavy quark operators, and compare the evaluation by the Operator Product Expansion with the result obtained inserting an infinite set of hadronic states, in the Nc → ∞ limit. Whereas the smeared spectral functions agree with each other, their local behaviour is different. The difference manifests itself in the form of a term () (ϵ being the residual energy) that is not present in the expansion in powers of predicted by the OPE. DA - 1997 DB - OpenUCT DP - University of Cape Town IS - 43104 J1 - Physics Letters, B LK - https://open.uct.ac.za PY - 1997 SM - 0370-2693 SM - 1873-2445 T1 - Violations of local duality in the heavy quark sector TI - Violations of local duality in the heavy quark sector UR - http://hdl.handle.net/11427/34661 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/34661
dc.identifier.vancouvercitationColangelo P, Dominguez CA, Nardulli G. Violations of local duality in the heavy quark sector. Physics Letters, B. 1997;409(43104):417 - 424. http://hdl.handle.net/11427/34661.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Physics
dc.publisher.facultyFaculty of Science
dc.sourcePhysics Letters, B
dc.source.journalissue43104
dc.source.journalvolume409
dc.source.pagination417 - 424
dc.source.urihttps://dx.doi.org/10.1016/S0370-2693(97)00890-3
dc.subject.otherHigh Energy Physics - Phenomenology *I did not find a proper PDF*
dc.titleViolations of local duality in the heavy quark sector
dc.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
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