Measurements of the Nucleon Form-Factors at Large Momentum Transfers

Conference · Sun Jul 26 00:00:00 EDT 1992 · Nuclear Physics A

OSTI ID:883166

Andivahis, L; Bosted, Peter; Lung, Allison; Stuart, Linda; Alster, Jonas; Arnold, Raymond; Chang, C; Dietrich, Frank; Dodge, William; Gearhart, R; Gomez, Javier; Griffioen, Keith; Hicks, William; Hyde-Wright, Charles; Keppel, Cynthia; Kuhn, Sebastian; Lichtenstadt, Jechiel; Miskimen, Rory; Peterson, Gerald; Petratos, Gerassimos ; Rock, Stephen; Rokni, Sayed; Sakumoto, Willis; Spengos, Michael; Swartz, Ken; Tao, L

New measurements of the electric GE(Q2) and magnetic GM(Q2) form factors of the nucleons are reported. The proton data cover the Q2 range from 1.75 to 8.83 (GeV/c)2 and the neutron data from 1.75 to 4.00 (GeV/c)2, more than doubling the range of previous data. Scaled by the dipole fit, GD(Q2), the results forGMp(Q2) /¿pGD(Q2) decrease smoothly from 1.05 to 0.92, while GEp(Q2)/GD(Q2)is consistent with unity. The preliminary results for GMn(Q2) /¿nGD(Q2) are consistent with unity, while GEn is consistent with zero at all values of Q2.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA
• Sponsoring Organization: USDOE - Office of Energy Research (ER)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 883166
• Report Number(s): CEBAF-PR-92-64; DOE/ER/40150-3906
• Journal Information: Nuclear Physics A, Journal Name: Nuclear Physics A Vol. 553
• Country of Publication: United States
• Language: English