Measurement of the electric form factor of the neutron at Q2=0.5 and 1.0 GeV2/c2.
The electric form factor of the neutron was determined from measurements of the d-->(e-->,e'n)p reaction for quasielastic kinematics. Polarized electrons were scattered off a polarized deuterated ammonia (15ND3) target in which the deuteron polarization was perpendicular to the momentum transfer. The scattered electrons were detected in a magnetic spectrometer in coincidence with neutrons in a large solid angle detector. We find G(n)(E)=0.0526+/-0.0033(stat)+/-0.0026(sys) and 0.0454+/-0.0054+/-0.0037 at Q(2)=0.5 and 1.0 (GeV/c)(2), respectively.
Universität Basel, CH-4056 Basel, Switzerland.
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Warren
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Wesselmann
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Zhu
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McKee
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Savvinov
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Zeier
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Aghalaryan
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Ahmidouch
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Arenhövel
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Asaturyan
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Ben-Dayan
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Bloch
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Boeglin
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Boillat
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Breuer
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Brower
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Carasco
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Carl
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Carlini
J
J
Cha
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Chant
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Christy
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Cole
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Coman
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Coman
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Crabb
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Danagoulian
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Day
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Duek
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Dunne
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Elaasar
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Ent
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Farrell
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Fatemi
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Fawcett
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Fenker
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Forest
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Garrow
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Gasparian
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Goussev
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Gueye
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Harvey
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Hauger
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Herrera
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Hu
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Jaegle
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Jones
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Jourdan
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Keith
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Kelly
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Keppel
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Khandaker
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Klein
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Klimenko
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Kramer
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Krusche
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Kuhn
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Liang
J
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Lichtenstadt
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R
Lindgren
J
J
Liu
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Lung
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Mack
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Maclachlan
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Markowitz
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McNulty
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Meekins
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Mitchell
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Mkrtchyan
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Nasseripour
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Niculescu
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Normand
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Norum
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Opper
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Piasetzky
J
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Pierce
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Pitt
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Prok
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Raue
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Reinhold
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Roche
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Rohe
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Rondon
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D
Sacker
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Sawatzky
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Seely
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Sick
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Simicevic
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Smith
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Smith
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Steinacher
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S
Stepanyan
J
J
Stout
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V
Tadevosyan
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S
Tajima
L
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Tang
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Testa
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Trojer
B
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Vlahovic
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Vulcan
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Wang
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Wells
H
H
Woehrle
S
S
Wood
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Yan
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Yanay
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Yuan
J
J
Yun
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Zihlmann