title: Spin-dependent electron-proton scattering in the Delta-excitation region.
abstract: We report on measurements of the cross section and provide first data on spin correlation parameters A(TT') and A(TL') in inclusive scattering of longitudinally polarized electrons from nuclear-polarized hydrogen. Polarized electrons were injected into an electron storage ring operated at a beam energy of 720 MeV. Polarized hydrogen was produced by an atomic beam source and injected into an open-ended cylindrical cell, located in the electron storage ring. The four-momentum transfer squared ranged from Q2 = 0.2 GeV(2)/c(2) at the elastic scattering peak to Q2 = 0.11 GeV(2)/c(2) at the Delta(1232) resonance. The data provide a stringent test of pion electroproduction models.
authors.affiliation: National Institute for Nuclear Physics and High Energy Physics, NL-1009 DB Amsterdam, The Netherlands.
authors.forename: L D
authors.initials: LD
authors.lastname: van Buuren
authors.forename: D
authors.initials: D
authors.lastname: Szczerba
authors.forename: R
authors.initials: R
authors.lastname: Alarcon
authors.forename: D J
authors.initials: DJ
authors.lastname: Boersma
authors.forename: J F J
authors.initials: JF
authors.lastname: van den Brand
authors.forename: H J
authors.initials: HJ
authors.lastname: Bulten
authors.forename: R
authors.initials: R
authors.lastname: Ent
authors.forename: M
authors.initials: M
authors.lastname: Ferro-Luzzi
authors.forename: M
authors.initials: M
authors.lastname: Harvey
authors.forename: P
authors.initials: P
authors.lastname: Heimberg
authors.forename: D W
authors.initials: DW
authors.lastname: Higinbotham
authors.forename: S
authors.initials: S
authors.lastname: Klous
authors.forename: H
authors.initials: H
authors.lastname: Kolster
authors.forename: J
authors.initials: J
authors.lastname: Lang
authors.forename: B L
authors.initials: BL
authors.lastname: Militsyn
authors.forename: D
authors.initials: D
authors.lastname: Nikolenko
authors.forename: B E
authors.initials: BE
authors.lastname: Norum
authors.forename: I
authors.initials: I
authors.lastname: Passchier
authors.forename: H R
authors.initials: HR
authors.lastname: Poolman
authors.forename: I
authors.initials: I
authors.lastname: Rachek
authors.forename: M C
authors.initials: MC
authors.lastname: Simani
authors.forename: E
authors.initials: E
authors.lastname: Six
authors.forename: H
authors.initials: H
authors.lastname: de Vries
authors.forename: Z-L
authors.initials: ZL
authors.lastname: Zhou