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N-to-Δ electromagnetic-transition form factors from lattice QCD

dc.contributor.authorAlexandrou, Constantiaen
dc.contributor.authorDe Forcrand, P.en
dc.contributor.authorNeff, H.en
dc.contributor.authorNegele, J. W.en
dc.contributor.authorSchroers, W.en
dc.contributor.authorTsapalis, Antoniosen
dc.creatorAlexandrou, Constantiaen
dc.creatorDe Forcrand, P.en
dc.creatorNeff, H.en
dc.creatorNegele, J. W.en
dc.creatorSchroers, W.en
dc.creatorTsapalis, Antoniosen
dc.date.accessioned2019-12-02T15:28:15Z
dc.date.available2019-12-02T15:28:15Z
dc.date.issued2005
dc.identifier.urihttp://gnosis.library.ucy.ac.cy/handle/7/58394
dc.description.abstractThe magnetic dipole (M1), the electric quadrupole (E2), and the Coulomb quadrupole (C2) amplitudes for γN → Δ are calculated in quenched lattice QCD. Using a new method, which combines an optimal choice of interpolating fields for the Δ and an overconstrained analysis, we obtain statistically accurate results for the dipole form factor and for the ratios REM = E2/M1 and RSM = C2/M1, up to momentum transfer squared 1.5 GeV2. We show for the first time, using lattice QCD, that both REM and RSM are nonzero and negative, in qualitative agreement with experiment and indicating the presence of deformation in the N/Δ system. © 2005 The American Physical Society.en
dc.sourcePhysical Review Lettersen
dc.source.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-18144385518&doi=10.1103%2fPhysRevLett.94.021601&partnerID=40&md5=ad74bcafe400206f923eeb63c63d826d
dc.subjectStatistical methodsen
dc.subjectMatrix algebraen
dc.subjectVectorsen
dc.subjectQuantum theoryen
dc.subjectElectromagnetic wavesen
dc.subjectKinematicsen
dc.subjectMagnetic momentsen
dc.subjectQuenchingen
dc.subjectInterpolationen
dc.subjectHigh energy physicsen
dc.subjectQCDen
dc.subjectCoulomb quadrupolesen
dc.subjectElectric quadrupolesen
dc.subjectElectromagnetic transitionen
dc.subjectMagnetic dipolesen
dc.titleN-to-Δ electromagnetic-transition form factors from lattice QCDel
dc.typeinfo:eu-repo/semantics/article
dc.identifier.doi10.1103/PhysRevLett.94.021601
dc.description.volume94
dc.description.issue2
dc.author.facultyΣχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences
dc.author.departmentΤμήμα Φυσικής / Department of Physics
dc.type.uhtypeArticleen
dc.description.notes<p>Cited By :83</p>en
dc.source.abbreviationPhys.Rev.Lett.en
dc.contributor.orcidAlexandrou, Constantia [0000-0001-9136-3621]
dc.gnosis.orcid0000-0001-9136-3621


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