Electromagnetic nucleon form factors from QCD sum rules

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dc.contributor.authorCastillo, Hernan
dc.contributor.authorDominguez, Cesareo A
dc.contributor.authorLoewe, Marcelo
dc.date.accessioned2017-11-22T14:19:57Z
dc.date.available2017-11-22T14:19:57Z
dc.date.issued2005
dc.date.updated2017-11-22T12:32:48Z
dc.description.abstractThe electromagnetic form factors of the nucleon, in the space-like region, are determined from three-point function Finite Energy QCD Sum Rules. The QCD calculation is performed to leading order in perturbation theory in the chiral limit, and to leading order in the non-perturbative power corrections. The results for the Dirac form factor, F1(q2), are in very good agreement with data for both the proton and the neutron, in the currently accessible experimental region of momentum transfers. This is not the case, though, for the Pauli form factor F2(q2), which has a soft q2-dependence proportional to the quark condensate h0|q¯q|0i.
dc.identifier.apacitationCastillo, H., Dominguez, C. A., & Loewe, M. (2005). Electromagnetic nucleon form factors from QCD sum rules. <i>Journal of High Energy Physics</i>, http://hdl.handle.net/11427/26413en_ZA
dc.identifier.chicagocitationCastillo, Hernan, Cesareo A Dominguez, and Marcelo Loewe "Electromagnetic nucleon form factors from QCD sum rules." <i>Journal of High Energy Physics</i> (2005) http://hdl.handle.net/11427/26413en_ZA
dc.identifier.citationCastillo, H., Dominguez, C. A., & Loewe, M. (2005). Electromagnetic nucleon form factors from QCD sum rules. Journal of High Energy Physics, 2005(03), 012.
dc.identifier.ris TY - Journal Article AU - Castillo, Hernan AU - Dominguez, Cesareo A AU - Loewe, Marcelo AB - The electromagnetic form factors of the nucleon, in the space-like region, are determined from three-point function Finite Energy QCD Sum Rules. The QCD calculation is performed to leading order in perturbation theory in the chiral limit, and to leading order in the non-perturbative power corrections. The results for the Dirac form factor, F1(q2), are in very good agreement with data for both the proton and the neutron, in the currently accessible experimental region of momentum transfers. This is not the case, though, for the Pauli form factor F2(q2), which has a soft q2-dependence proportional to the quark condensate h0|q¯q|0i. DA - 2005 DB - OpenUCT DP - University of Cape Town J1 - Journal of High Energy Physics LK - https://open.uct.ac.za PB - University of Cape Town PY - 2005 T1 - Electromagnetic nucleon form factors from QCD sum rules TI - Electromagnetic nucleon form factors from QCD sum rules UR - http://hdl.handle.net/11427/26413 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/26413
dc.identifier.vancouvercitationCastillo H, Dominguez CA, Loewe M. Electromagnetic nucleon form factors from QCD sum rules. Journal of High Energy Physics. 2005; http://hdl.handle.net/11427/26413.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Physicsen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.sourceJournal of High Energy Physics
dc.source.urihttps://link.springer.com/journal/13130
dc.subject.otherElectromagnetic processes and properties, QCD, phenomenological models
dc.titleElectromagnetic nucleon form factors from QCD sum rules
dc.typeJournal Article
uct.type.filetypeText
uct.type.filetypeImage
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