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Nucleon to Delta transition form factors with N-F=2+1 domain wall fermions

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dc.contributor.author Alexandrou, C en
dc.contributor.author Koutsou, G en
dc.contributor.author Negele, JW en
dc.contributor.author Proestos, Y en
dc.contributor.author Tsapalis, A en
dc.date.accessioned 2014-03-01T02:05:27Z
dc.date.available 2014-03-01T02:05:27Z
dc.date.issued 2011 en
dc.identifier.issn 1550-7998 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/29483
dc.subject.classification Astronomy & Astrophysics en
dc.subject.classification Physics, Particles & Fields en
dc.subject.other LATTICE QCD en
dc.subject.other GAMMA-ASTERISK en
dc.subject.other DEFORMATION en
dc.title Nucleon to Delta transition form factors with N-F=2+1 domain wall fermions en
heal.type journalArticle en
heal.identifier.secondary 014501 en
heal.language English en
heal.publicationDate 2011 en
heal.abstract We calculate the electromagnetic, axial, and pseudoscalar form factors of the nucleon to Delta(1232) transition using two dynamical light degenerate quarks and a dynamical strange quark simulated with the domain wall fermion action. Results are obtained at lattice spacings a = 0.114 fm and a = 0.084 fm, with corresponding pion masses of 330 MeV and 297 MeV, respectively. High statistics measurements are achieved by utilizing the coherent sink technique. The dominant electromagnetic dipole form factor, the axial form factors and the pseudoscalar coupling are extracted to a good accuracy. This allows the investigation of the nondiagonal Goldberger-Treiman relation. Particular emphasis is given on the extraction of the subdominant electromagnetic quadrupole form factors and their ratio to the dominant dipole form factor, R-EM and R-SM, measured in experiment. en
heal.publisher AMER PHYSICAL SOC en
heal.journalName PHYSICAL REVIEW D en
dc.identifier.isi ISI:000286759100002 en
dc.identifier.volume 83 en
dc.identifier.issue 1 en


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