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

Alexandrou, C; Koutsou, G; Negele, JW; Proestos, Y; Tsapalis, A

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