Measurement Of The Electric Form Factor Of The Neutron At Q(2)=0.5 And 1.0 Gev2/C(2)

G. Warren,F. R. Wesselmann,H. Zhu,P. McKee,N. Savvinov,M. Zeier,A. Aghalaryan,A. Ahmidouch,H. Arenhovel,R. Asaturyan,I. Ben-Dayan,F. Bloch,W. Boeglin,B. Boillat,H. Breuer,J. Brower,C. Carasco,M. Carl,R. Carlini,J. Cha,N. Chant,E. Christy,L. Cole,L. Coman,M. Coman,D. Crabb,S. Danagoulian, K. Duek,J. Dunne,M. Elaasar,R. Ent,J. Farrell,R. Fatemi,D. Fawcett,H. Fenker,K. Garrow,A. Gasparian,I. Goussev,P. Gueye, M. Harvey,M. Hauger, R. Herrera,B. Hu,I. Jaegle,M. Jones,J. Jourdan,C. Keith,J. Kelly,C. Keppel,M. Khandaker,A. Klein,A. Klimenko,L. Kramer,B. Krusche,S. Kuhn,Y. Liang,J. Lichtenstadt,R. Lindgren,J. Liu,A. Lung,D. Mack,G. Maclachlan,P. Markowitz,D. McNulty,D. Meekins,J. Mitchell,H. Mkrtchyan,R. Nasseripour,I. Niculescu,K. Normand,B. Norum,A. Opper,E. Piasetzky,J. Pierce,M. Pitt,Y. Prok,B. Raue,J. Reinhold,J. Roche,D. Rohe,O. Rondon, D. Sacker,B. Sawatzky,M. Seely,I. Sick,N. Simicevic,C. Smith,G. Smith,M. Steinacher,S. Stepanyan, J. Stout,V. Tadevosyan,S. Tajima,L. Tang,G. Testa,R. Trojer,B. Vlahovic, B. Vulcan,K. Wang,S. Wells,H. Woehrle,S. Wood,C. Yan,Y. Yanay,L. Yuan,J. Yun, B. Zihlmann,J. Yun,B. Zihlmann

PHYSICAL REVIEW LETTERS（2004）

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摘要

The electric form factor of the neutron was determined from measurements of the (d) over right arrow((e) over right arrow ,e(')n)p reaction for quasielastic kinematics. Polarized electrons were scattered off a polarized deuterated ammonia ((ND3)-N-15) 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(E)(n)=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.

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关键词

momentum transfer,elastic scattering,form factor

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