Nucleon to Δ transition form factors with NF=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	2014-03-01T02:03:03Z
dc.date.available	2014-03-01T02:03:03Z
dc.date.issued	2011	en
dc.identifier.issn	15507998	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29340
dc.title	Nucleon to Δ transition form factors with NF=2+1 domain wall fermions	en
heal.type	journalArticle	en
heal.identifier.primary	10.1103/PhysRevD.83.014501	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevD.83.014501	en
heal.identifier.secondary	014501	en
heal.publicationDate	2011	en
heal.abstract	We calculate the electromagnetic, axial, and pseudoscalar form factors of the nucleon to Δ(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=0.114fm and a=0.084fm, 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, REM and RSM, measured in experiment. © 2011 American Physical Society.	en
heal.journalName	Physical Review D - Particles, Fields, Gravitation and Cosmology	en
dc.identifier.doi	10.1103/PhysRevD.83.014501	en
dc.identifier.volume	83	en
dc.identifier.issue	1	en