Measurement of the electric form factor of the neutron at Q2=0.5 and 1.0 GeV2/c2

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 t...

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Veröffentlicht in:Physical review letters 2004-01, Vol.92 (4), p.042301-042301
Hauptverfasser: Warren, G, Wesselmann, F, Zhu, H, McKee, P, Savvinov, N, Zeier, M, Aghalaryan, A, Ahmidouch, A, Arenhövel, H, Asaturyan, R, Ben-Dayan, I, Bloch, F, Boeglin, W, Boillat, B, Breuer, H, Brower, J, Carasco, C, Carl, M, Carlini, R, Cha, J, Chant, N, Christy, E, Cole, L, Coman, L, Coman, M, Crabb, D, Danagoulian, S, Day, D, Duek, K, Dunne, J, Elaasar, M, Ent, R, Farrell, J, Fatemi, R, Fawcett, D, Fenker, H, Forest, T, Garrow, K, Gasparian, A, Goussev, I, Gueye, P, Harvey, M, Hauger, M, Herrera, R, Hu, B, Jaegle, I, Jones, M, Jourdan, J, Keith, C, Kelly, J, Keppel, C, Khandaker, M, Klein, A, Klimenko, A, Kramer, L, Krusche, B, Kuhn, S, Liang, Y, Lichtenstadt, J, Lindgren, R, Liu, J, Lung, A, Mack, D, Maclachlan, G, Markowitz, P, McNulty, D, Meekins, D, Mitchell, J, Mkrtchyan, H, Nasseripour, R, Niculescu, I, Normand, K, Norum, B, Opper, A, Piasetzky, E, Pierce, J, Pitt, M, Prok, Y, Raue, B, Reinhold, J, Roche, J, Rohe, D, Rondon, O, Sacker, D, Sawatzky, B, Seely, M, Sick, I, Simicevic, N, Smith, C, Smith, G, Steinacher, M, Stepanyan, S, Stout, J, Tadevosyan, V, Tajima, S, Tang, L, Testa, G, Trojer, R, Vlahovic, B, Vulcan, B
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Sprache:eng
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Zusammenfassung: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.
ISSN:0031-9007