Measurement of the proton's electric to magnetic form factor ratio from 1(H)over-right-arrow((e)over-right-arrow,e ' p)

Crawford, CB; Sindile, A; Akdogan, T; Alarcon, R; Bertozzi, W; Booth, E; Botto, T; Calarco, J; Clasie, B; Degrush, A; Donnelly, TW; Dow, K; Dutta, D; Farkhondeh, M; Fatemi, R; Filoti, O; Franklin, W; Gao, H; Geis, E; Gilad, S; Haeberli, W; Hasell, D; Hersman, W; Holtrop, M; Karpius, P; Kohl, M; Kolster, Hauke; Lee, T; Maschinot, A; Matthews, J; McIlhany, K; Meitanis, N; Milner, RG; Redwine, RP; Seely, J; Shinozaki, A; Sirca, S; Six, E; Smith, T; Tonguc, B; Tschalaer, C; Tsentalovich, E; Turchinetz, W; van den Brand, JFJ; van der Laan, J; Wang, F; Wise, T; Xiao, Y; Xu, W; Zhang, C; Zhou, Z; Ziskin, V; Zwart, T

doi:10.1103/PhysRevLett.98.052301

Measurement of the proton's electric to magnetic form factor ratio from 1(H)over-right-arrow((e)over-right-arrow,e ' p)

Author:

Crawford, CB

Sindile, A ; Akdogan, T ; Alarcon, R ; Bertozzi, W ; Booth, E ; Botto, T ; Calarco, J ; Clasie, B ; Degrush, A ; Donnelly, TW ; Dow, K ; Dutta, D ; Farkhondeh, M ; Fatemi, R ; Filoti, O ; Franklin, W ; Gao, H ; Geis, E ; Gilad, S ; Haeberli, W ; Hasell, D ; Hersman, W ; Holtrop, M ; Karpius, P ; Kohl, M ; Kolster, Hauke ; Lee, T ; Maschinot, A ; Matthews, J ; McIlhany, K ; Meitanis, N ; Milner, RG ; Redwine, RP ; Seely, J ; Shinozaki, A ; Sirca, S ; Six, E ; Smith, T ; Tonguc, B ; Tschalaer, C ; Tsentalovich, E ; Turchinetz, W ; van den Brand, JFJ ; van der Laan, J ; Wang, F ; Wise, T ; Xiao, Y ; Xu, W ; Zhang, C ; Zhou, Z ; Ziskin, V ; Zwart, T

Keywords:

squared 4-momentum transfers, scattering cross sections, polarization transfer, elastic-scattering, momentum-transfers, gas-target, nucleon, neutron, (gev/c)(2), deuteron, Science & Technology, Physical Sciences, Physics, Multidisciplinary, Physics, SQUARED 4-MOMENTUM TRANSFERS, SCATTERING CROSS-SECTIONS, POLARIZATION TRANSFER, ELASTIC-SCATTERING, GAS-TARGET, NUCLEON, NEUTRON, 01 Mathematical Sciences, 02 Physical Sciences, 09 Engineering, General Physics, 40 Engineering, 49 Mathematical sciences, 51 Physical sciences

Abstract:

We report the first precision measurement of the proton electric to magnetic form factor ratio from spin-dependent elastic scattering of longitudinally polarized electrons from a polarized hydrogen internal gas target. The measurement was performed at the MIT-Bates South Hall Ring over a range of four-momentum transfer squared Q(2) from 0.15 to 0.65 (GeV/c)(2). Significantly improved results on the proton electric and magnetic form factors are obtained in combination with existing cross-section data on elastic electron-proton scattering in the same Q(2) region.