title: First measurement of the double spin asymmetry in (-->)e(-->)p-->e(prime)pi(+)n in the resonance region.
abstract: The double spin asymmetry in the (-->)e(-->)p --> e(prime)pi(+)n reaction has been measured for the first time in the resonance region for four-momentum transfer Q2 = 0.35-1.5 GeV(2). Data were taken at Jefferson Lab with the CLAS detector using a 2.6 GeV polarized electron beam incident on a polarized solid NH3 target. Comparison with predictions of phenomenological models shows strong sensitivity to resonance contributions. Helicity-1/2 transitions are found to be dominant in the second and third resonance regions. The measured asymmetry is consistent with a faster rise with Q(2) of the helicity asymmetry A1 for the F(15)(1680) resonance than expected from the analysis of the unpolarized data.
authors.affiliation: Istituto Nazionale di Fisica Nucleare, Sezione di Genova, and Dipartimento di Fisica dell'Università, 16146 Genova, Italy.
authors.forename: R
authors.initials: R
authors.lastname: De Vita
authors.forename: M
authors.initials: M
authors.lastname: Anghinolfi
authors.forename: V D
authors.initials: VD
authors.lastname: Burkert
authors.forename: G E
authors.initials: GE
authors.lastname: Dodge
authors.forename: R
authors.initials: R
authors.lastname: Minehart
authors.forename: M
authors.initials: M
authors.lastname: Taiuti
authors.forename: H
authors.initials: H
authors.lastname: Weller
authors.forename: G
authors.initials: G
authors.lastname: Adams
authors.forename: M J
authors.initials: MJ
authors.lastname: Amaryan
authors.forename: E
authors.initials: E
authors.lastname: Anciant
authors.forename: D S
authors.initials: DS
authors.lastname: Armstrong
authors.forename: B
authors.initials: B
authors.lastname: Asavapibhop
authors.forename: G
authors.initials: G
authors.lastname: Asryan
authors.forename: G
authors.initials: G
authors.lastname: Audit
authors.forename: T
authors.initials: T
authors.lastname: Auger
authors.forename: H
authors.initials: H
authors.lastname: Avakian
authors.forename: H
authors.initials: H
authors.lastname: Bagdasaryan
authors.forename: J P
authors.initials: JP
authors.lastname: Ball
authors.forename: S
authors.initials: S
authors.lastname: Barrow
authors.forename: M
authors.initials: M
authors.lastname: Battaglieri
authors.forename: K
authors.initials: K
authors.lastname: Beard
authors.forename: M
authors.initials: M
authors.lastname: Bektasoglu
authors.forename: N
authors.initials: N
authors.lastname: Bianchi
authors.forename: A S
authors.initials: AS
authors.lastname: Biselli
authors.forename: S
authors.initials: S
authors.lastname: Boiarinov
authors.forename: B E
authors.initials: BE
authors.lastname: Bonner
authors.forename: P
authors.initials: P
authors.lastname: Bosted
authors.forename: S
authors.initials: S
authors.lastname: Bouchigny
authors.forename: D
authors.initials: D
authors.lastname: Branford
authors.forename: W K
authors.initials: WK
authors.lastname: Brooks
authors.forename: S
authors.initials: S
authors.lastname: Bueltmann
authors.forename: J R
authors.initials: JR
authors.lastname: Calarco
authors.forename: G P
authors.initials: GP
authors.lastname: Capitani
authors.forename: D S
authors.initials: DS
authors.lastname: Carman
authors.forename: B
authors.initials: B
authors.lastname: Carnahan
authors.forename: A
authors.initials: A
authors.lastname: Cazes
authors.forename: L
authors.initials: L
authors.lastname: Ciciani
authors.forename: P L
authors.initials: PL
authors.lastname: Cole
authors.forename: A
authors.initials: A
authors.lastname: Coleman
authors.forename: J
authors.initials: J
authors.lastname: Connelly
authors.forename: D
authors.initials: D
authors.lastname: Cords
authors.forename: P
authors.initials: P
authors.lastname: Corvisiero
authors.forename: D
authors.initials: D
authors.lastname: Crabb
authors.forename: H
authors.initials: H
authors.lastname: Crannell
authors.forename: J P
authors.initials: JP
authors.lastname: Cummings
authors.forename: E
authors.initials: E
authors.lastname: De Sanctis
authors.forename: P V
authors.initials: PV
authors.lastname: Degtyarenko
authors.forename: R
authors.initials: R
authors.lastname: Demirchyan
authors.forename: H
authors.initials: H
authors.lastname: Denizli
authors.forename: L
authors.initials: L
authors.lastname: Dennis
authors.forename: K V
authors.initials: KV
authors.lastname: Dharmawardane
authors.forename: K S
authors.initials: KS
authors.lastname: Dhuga
authors.forename: C
authors.initials: C
authors.lastname: Djalali
authors.forename: D
authors.initials: D
authors.lastname: Doughty
authors.forename: P
authors.initials: P
authors.lastname: Dragovitsch
authors.forename: M
authors.initials: M
authors.lastname: Dugger
authors.forename: S
authors.initials: S
authors.lastname: Dytman
authors.forename: M
authors.initials: M
authors.lastname: Eckhause
authors.forename: H
authors.initials: H
authors.lastname: Egiyan
authors.forename: K S
authors.initials: KS
authors.lastname: Egiyan
authors.forename: L
authors.initials: L
authors.lastname: Elouadrhiri
authors.forename: A
authors.initials: A
authors.lastname: Empl
authors.forename: L
authors.initials: L
authors.lastname: Farhi
authors.forename: R
authors.initials: R
authors.lastname: Fatemi
authors.forename: R J
authors.initials: RJ
authors.lastname: Feuerbach
authors.forename: J
authors.initials: J
authors.lastname: Ficenec
authors.forename: T A
authors.initials: TA
authors.lastname: Forest
authors.forename: V
authors.initials: V
authors.lastname: Frolov
authors.forename: H
authors.initials: H
authors.lastname: Funsten
authors.forename: S J
authors.initials: SJ
authors.lastname: Gaff
authors.forename: M
authors.initials: M
authors.lastname: Gai
authors.forename: M
authors.initials: M
authors.lastname: Garçon
authors.forename: G
authors.initials: G
authors.lastname: Gavalian
authors.forename: S
authors.initials: S
authors.lastname: Gilad
authors.forename: G P
authors.initials: GP
authors.lastname: Gilfoyle
authors.forename: K L
authors.initials: KL
authors.lastname: Giovanetti
authors.forename: P
authors.initials: P
authors.lastname: Girard
authors.forename: E
authors.initials: E
authors.lastname: Golovatch
authors.forename: K
authors.initials: K
authors.lastname: Griffioen
authors.forename: M
authors.initials: M
authors.lastname: Guidal
authors.forename: M
authors.initials: M
authors.lastname: Guillo
authors.forename: V
authors.initials: V
authors.lastname: Gyurjyan
authors.forename: C
authors.initials: C
authors.lastname: Hadjidakis
authors.forename: D
authors.initials: D
authors.lastname: Hancock
authors.forename: J
authors.initials: J
authors.lastname: Hardie
authors.forename: D
authors.initials: D
authors.lastname: Heddle
authors.forename: P
authors.initials: P
authors.lastname: Heimberg
authors.forename: F W
authors.initials: FW
authors.lastname: Hersman
authors.forename: K
authors.initials: K
authors.lastname: Hicks
authors.forename: R S
authors.initials: RS
authors.lastname: Hicks
authors.forename: M
authors.initials: M
authors.lastname: Holtrop
authors.forename: J
authors.initials: J
authors.lastname: Hu
authors.forename: C E
authors.initials: CE
authors.lastname: Hyde-Wright
authors.forename: B S
authors.initials: BS
authors.lastname: Ishkanov
authors.forename: M M
authors.initials: MM
authors.lastname: Ito
authors.forename: D
authors.initials: D
authors.lastname: Jenkins
authors.forename: K
authors.initials: K
authors.lastname: Joo
authors.forename: J H
authors.initials: JH
authors.lastname: Kelley
authors.forename: J D
authors.initials: JD
authors.lastname: Kellie
authors.forename: M
authors.initials: M
authors.lastname: Khandaker
authors.forename: K Y
authors.initials: KY
authors.lastname: Kim
authors.forename: K
authors.initials: K
authors.lastname: Kim
authors.forename: W
authors.initials: W
authors.lastname: Kim
authors.forename: A
authors.initials: A
authors.lastname: Klein
authors.forename: F J
authors.initials: FJ
authors.lastname: Klein
authors.forename: M
authors.initials: M
authors.lastname: Klusman
authors.forename: M
authors.initials: M
authors.lastname: Kossov
authors.forename: L H
authors.initials: LH
authors.lastname: Kramer
authors.forename: Y
authors.initials: Y
authors.lastname: Kuang
authors.forename: S E
authors.initials: SE
authors.lastname: Kuhn
authors.forename: J
authors.initials: J
authors.lastname: Lachniet
authors.forename: J M
authors.initials: JM
authors.lastname: Laget
authors.forename: D
authors.initials: D
authors.lastname: Lawrence
authors.forename: Ji
authors.initials: J
authors.lastname: Li
authors.forename: K
authors.initials: K
authors.lastname: Livingston
authors.forename: A
authors.initials: A
authors.lastname: Longhi
authors.forename: K
authors.initials: K
authors.lastname: Loukachine
authors.forename: M
authors.initials: M
authors.lastname: Lucas
authors.forename: W
authors.initials: W
authors.lastname: Major
authors.forename: J J
authors.initials: JJ
authors.lastname: Manak
authors.forename: C
authors.initials: C
authors.lastname: Marchand
authors.forename: S
authors.initials: S
authors.lastname: McAleer
authors.forename: J
authors.initials: J
authors.lastname: McCarthy
authors.forename: J W C
authors.initials: JW
authors.lastname: McNabb
authors.forename: B A
authors.initials: BA
authors.lastname: Mecking
authors.forename: M D
authors.initials: MD
authors.lastname: Mestayer
authors.forename: C A
authors.initials: CA
authors.lastname: Meyer
authors.forename: K
authors.initials: K
authors.lastname: Mikhailov
authors.forename: M
authors.initials: M
authors.lastname: Mirazita
authors.forename: R
authors.initials: R
authors.lastname: Miskimen
authors.forename: V
authors.initials: V
authors.lastname: Mokeev
authors.forename: V
authors.initials: V
authors.lastname: Muccifora
authors.forename: J
authors.initials: J
authors.lastname: Mueller
authors.forename: G S
authors.initials: GS
authors.lastname: Mutchler
authors.forename: J
authors.initials: J
authors.lastname: Napolitano
authors.forename: S O
authors.initials: SO
authors.lastname: Nelson
authors.forename: G
authors.initials: G
authors.lastname: Niculescu
authors.forename: I
authors.initials: I
authors.lastname: Niculescu
authors.forename: B B
authors.initials: BB
authors.lastname: Niczyporuk
authors.forename: R A
authors.initials: RA
authors.lastname: Niyazov
authors.forename: A K
authors.initials: AK
authors.lastname: Opper
authors.forename: G V
authors.initials: GV
authors.lastname: O'Rielly
authors.forename: M
authors.initials: M
authors.lastname: Osipenko
authors.forename: K
authors.initials: K
authors.lastname: Park
authors.forename: E
authors.initials: E
authors.lastname: Pasyuk
authors.forename: G
authors.initials: G
authors.lastname: Peterson
authors.forename: S A
authors.initials: SA
authors.lastname: Philips
authors.forename: N
authors.initials: N
authors.lastname: Pivnyuk
authors.forename: D
authors.initials: D
authors.lastname: Pocanic
authors.forename: O
authors.initials: O
authors.lastname: Pogorelko
authors.forename: E
authors.initials: E
authors.lastname: Polli
authors.forename: S
authors.initials: S
authors.lastname: Pozdniakov
authors.forename: B M
authors.initials: BM
authors.lastname: Preedom
authors.forename: J W
authors.initials: JW
authors.lastname: Price
authors.forename: Y
authors.initials: Y
authors.lastname: Prok
authors.forename: D
authors.initials: D
authors.lastname: Protopopescu
authors.forename: L M
authors.initials: LM
authors.lastname: Qin
authors.forename: B A
authors.initials: BA
authors.lastname: Raue
authors.forename: A R
authors.initials: AR
authors.lastname: Reolon
authors.forename: G
authors.initials: G
authors.lastname: Riccardi
authors.forename: G
authors.initials: G
authors.lastname: Ricco
authors.forename: M
authors.initials: M
authors.lastname: Ripani
authors.forename: B G
authors.initials: BG
authors.lastname: Ritchie
authors.forename: S
authors.initials: S
authors.lastname: Rock
authors.forename: F
authors.initials: F
authors.lastname: Ronchetti
authors.forename: P
authors.initials: P
authors.lastname: Rossi
authors.forename: D
authors.initials: D
authors.lastname: Rowntree
authors.forename: P D
authors.initials: PD
authors.lastname: Rubin
authors.forename: F
authors.initials: F
authors.lastname: Sabatié
authors.forename: K
authors.initials: K
authors.lastname: Sabourov
authors.forename: C
authors.initials: C
authors.lastname: Salgado
authors.forename: V
authors.initials: V
authors.lastname: Sapunenko
authors.forename: M
authors.initials: M
authors.lastname: Sargsyan
authors.forename: R A
authors.initials: RA
authors.lastname: Schumacher
authors.forename: V S
authors.initials: VS
authors.lastname: Serov
authors.forename: A
authors.initials: A
authors.lastname: Shafi
authors.forename: Y G
authors.initials: YG
authors.lastname: Sharabian
authors.forename: J
authors.initials: J
authors.lastname: Shaw
authors.forename: A V
authors.initials: AV
authors.lastname: Skabelin
authors.forename: E S
authors.initials: ES
authors.lastname: Smith
authors.forename: T
authors.initials: T
authors.lastname: Smith
authors.forename: L C
authors.initials: LC
authors.lastname: Smith
authors.forename: D I
authors.initials: DI
authors.lastname: Sober
authors.forename: L
authors.initials: L
authors.lastname: Sorrell
authors.forename: M
authors.initials: M
authors.lastname: Spraker
authors.forename: A
authors.initials: A
authors.lastname: Stavinsky
authors.forename: S
authors.initials: S
authors.lastname: Stepanyan
authors.forename: P
authors.initials: P
authors.lastname: Stoler
authors.forename: I I
authors.initials: II
authors.lastname: Strakovsky
authors.forename: S
authors.initials: S
authors.lastname: Taylor
authors.forename: D J
authors.initials: DJ
authors.lastname: Tedeschi
authors.forename: R
authors.initials: R
authors.lastname: Thompson
authors.forename: L
authors.initials: L
authors.lastname: Todor
authors.forename: M
authors.initials: M
authors.lastname: Ungaro
authors.forename: M F
authors.initials: MF
authors.lastname: Vineyard
authors.forename: A V
authors.initials: AV
authors.lastname: Vlassov
authors.forename: K
authors.initials: K
authors.lastname: Wang
authors.forename: L B
authors.initials: LB
authors.lastname: Weinstein
authors.forename: A
authors.initials: A
authors.lastname: Weisberg
authors.forename: D P
authors.initials: DP
authors.lastname: Weygand
authors.forename: C S
authors.initials: CS
authors.lastname: Whisnant
authors.forename: E
authors.initials: E
authors.lastname: Wolin
authors.forename: A
authors.initials: A
authors.lastname: Yegneswaran
authors.forename: J
authors.initials: J
authors.lastname: Yun
authors.forename: B
authors.initials: B
authors.lastname: Zhang
authors.forename: J
authors.initials: J
authors.lastname: Zhao
authors.forename: Z
authors.initials: Z
authors.lastname: Zhou