Measurements of the electric form factor of the neutron up to Q2=3.4 GeV2 using the reaction 3He(e,e'n)pp

S Riordan; S Abrahamyan; B Craver; A Kelleher; A Kolarkar; J Miller; G D Cates; N Liyanage; B Wojtsekhowski; A Acha; K Allada; B Anderson; K A Aniol; J R M Annand; J Arrington; T Averett; A Beck; M Bellis; W Boeglin; H Breuer; J R Calarco; A Camsonne; J P Chen; E Chudakov; L Coman; B Crowe; F Cusanno; D Day; P Degtyarenko; P A M Dolph; C Dutta; C Ferdi; C Fernández-Ramírez; R Feuerbach; L M Fraile; G Franklin; S Frullani; S Fuchs; F Garibaldi; N Gevorgyan; R Gilman; A Glamazdin; J Gomez; K Grimm; J-O Hansen; J L Herraiz; D W Higinbotham; R Holmes; T Holmstrom; D Howell; C W de Jager; X Jiang; M K Jones; J Katich; L J Kaufman; M Khandaker; J J Kelly; D Kiselev; W Korsch; J LeRose; R Lindgren; P Markowitz; D J Margaziotis; S May-Tal Beck; S Mayilyan; K McCormick; Z-E Meziani; R Michaels; B Moffit; S Nanda; V Nelyubin; T Ngo; D M Nikolenko; B Norum; L Pentchev; C F Perdrisat; E Piasetzky; R Pomatsalyuk; D Protopopescu; A J R Puckett; V A Punjabi; X Qian; Y Qiang; B Quinn; I Rachek; R D Ransome; P E Reimer; B Reitz; J Roche; G Ron; O Rondon; G Rosner; A Saha; M M Sargsian; B Sawatzky; J Segal; M Shabestari; A Shahinyan; Yu Shestakov; J Singh; S Sirca; P Souder; S Stepanyan; V Stibunov; V Sulkosky; S Tajima; W A Tobias; J M Udias; G M Urciuoli; B Vlahovic; H Voskanyan; K Wang; F R Wesselmann; J R Vignote; S A Wood; J Wright; H Yao; X Zhu

doi:10.1103/PhysRevLett.105.262302

Measurements of the electric form factor of the neutron up to Q2=3.4 GeV2 using the reaction 3He(e,e'n)pp

Phys Rev Lett. 2010 Dec 31;105(26):262302. doi: 10.1103/PhysRevLett.105.262302. Epub 2010 Dec 30.

Authors

S Riordan¹, S Abrahamyan, B Craver, A Kelleher, A Kolarkar, J Miller, G D Cates, N Liyanage, B Wojtsekhowski, A Acha, K Allada, B Anderson, K A Aniol, J R M Annand, J Arrington, T Averett, A Beck, M Bellis, W Boeglin, H Breuer, J R Calarco, A Camsonne, J P Chen, E Chudakov, L Coman, B Crowe, F Cusanno, D Day, P Degtyarenko, P A M Dolph, C Dutta, C Ferdi, C Fernández-Ramírez, R Feuerbach, L M Fraile, G Franklin, S Frullani, S Fuchs, F Garibaldi, N Gevorgyan, R Gilman, A Glamazdin, J Gomez, K Grimm, J-O Hansen, J L Herraiz, D W Higinbotham, R Holmes, T Holmstrom, D Howell, C W de Jager, X Jiang, M K Jones, J Katich, L J Kaufman, M Khandaker, J J Kelly, D Kiselev, W Korsch, J LeRose, R Lindgren, P Markowitz, D J Margaziotis, S May-Tal Beck, S Mayilyan, K McCormick, Z-E Meziani, R Michaels, B Moffit, S Nanda, V Nelyubin, T Ngo, D M Nikolenko, B Norum, L Pentchev, C F Perdrisat, E Piasetzky, R Pomatsalyuk, D Protopopescu, A J R Puckett, V A Punjabi, X Qian, Y Qiang, B Quinn, I Rachek, R D Ransome, P E Reimer, B Reitz, J Roche, G Ron, O Rondon, G Rosner, A Saha, M M Sargsian, B Sawatzky, J Segal, M Shabestari, A Shahinyan, Yu Shestakov, J Singh, S Sirca, P Souder, S Stepanyan, V Stibunov, V Sulkosky, S Tajima, W A Tobias, J M Udias, G M Urciuoli, B Vlahovic, H Voskanyan, K Wang, F R Wesselmann, J R Vignote, S A Wood, J Wright, H Yao, X Zhu

Affiliation

¹ Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.

PMID: 21231649
DOI: 10.1103/PhysRevLett.105.262302

Abstract

The electric form factor of the neutron was determined from studies of the reaction 3He(e,e'n)pp in quasielastic kinematics in Hall A at Jefferson Lab. Longitudinally polarized electrons were scattered off a polarized target in which the nuclear polarization was oriented perpendicular to the momentum transfer. The scattered electrons were detected in a magnetic spectrometer in coincidence with neutrons that were registered in a large-solid-angle detector. More than doubling the Q2 range over which it is known, we find G(E)(n)=0.0236±0.0017(stat)±0.0026(syst), 0.0208±0.0024±0.0019, and 0.0147±0.0020±0.0014 for Q(2)=1.72, 2.48, and 3.41 GeV2, respectively.