GEp/GMp Ratio by Polarization Transfer in e→p→ep→

Jones, M. K.; Aniol, K. A.; Baker, F. T.; Berthot, J.; Bertin, P. Y.; Bertozzi, W.; Besson, A.; Bimbot, L.; Boeglin, W. U.; Brash, E. J.; Brown, D.; Calarco, J. R.; Cardman, L. S.; Chang, C. -C.; Chen, J. -P.; Chudakov, E.; Churchwell, S.; Cisbani, E.; Dale, D. S.; De Leo, R.; Deur, A.; Diederich, B.; Domingo, J. J.; Epstein, M. B.; Ewell, L. A.; Fissum, K. G.; Fleck, A.; Fonvieille, H.; Frullani, S.; Gao, J.; Garibaldi, F.; Gasparian, A.; Gerstner, G.; Gilad, S.; Gilman, R.; Glamazdin, A.; Glashausser, C.; Gomez, J.; Gorbenko, V.; Green, A.; Hansen, J. -O.; Howell, C. R.; Huber, G. M.; Iodice, M.; de Jager, C. W.; Jaminion, S.; Jiang, X.; Kahl, W.; Kelly, J. J.; Khayat, M.; Kramer, L. H.; Kumbartzki, G.; Kuss, M.; Lakuriki, E.; Lavessière, G.; LeRose, J. J.; Liang, M.; Lindgren, R. A.; Liyanage, N.; Lolos, G. J.; Macri, R.; Madey, R.; Malov, S.; Margaziotis, D. J.; Markowitz, P.; McCormick, K.; McIntyre, J. I.; van der Meer, R. L.  J.; Michaels, R.; Milbrath, B. D.; Mougey, J. Y.; Nanda, S. K.; Offermann, E. A.  J.  M.; Papandreou, Z.; Perdrisat, C. F.; Petratos, G. G.; Piskunov, N. M.; Pomatsalyuk, R. I.; Prout, D. L.; Punjabi, V.; Quéméner, G.; Ransome, R. D.; Raue, B. A.; Roblin, Y.; Roche, R.; Rutledge, G.; Rutt, P. M.; Saha, A.; Saito, T.; Sarty, A. J.; Smith, T. P.; Sorokin, P.; Strauch, S.; Suleiman, R.; Takahashi, K.; Templon, J. A.; Todor, L.; Ulmer, P. E.; Urciuoli, G. M.; Vernin, P.; Vlahovic, B.; Voskanyan, H.; Wijesooriya, K.; Wojtsekhowski, B. B.; Woo, R. J.; Xiong, F.; Zainea, G. D.; Zhou, Z. -L.

doi:10.1103/PhysRevLett.84.1398

$G_{E_{p}} / G_{M_{p}}$ Ratio by Polarization Transfer in $\vec{e} p \to e \vec{p}$

Journal Article · Tue Feb 01 04:00:00 EST 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.84.1398· OSTI ID:801496

Jones, M. K.; Aniol, K. A.; Baker, F. T.; Berthot, J.; Bertin, P. Y.; Bertozzi, W.; Besson, A.; Bimbot, L.; Boeglin, W. U.; Brash, E. J.; Brown, D.; Calarco, J. R.; Cardman, L. S.; Chang, C. -C.; Chen, J. -P.; Chudakov, E.; Churchwell, S.; Cisbani, E.; Dale, D. S.; De Leo, R. more »

The ratio of the proton's elastic electromagnetic form factors, G{sub Ep}/G{sub Mp} was obtained by measuring P{sub t} and P{ell}, the transverse and the longitudinal recoil proton polarization, respectively. For elastic ep {yields} ep, G{sub Ep}/G{sub Mp} is proportional to P{sub t}/P{ell}. Simultaneous measurement of P{sub t} and P{ell} in a polarimeter provides good control of the systematic uncertainty. The results for the ratio G{sub Ep}/G{sub Mp} show a systematic decrease as Q{sup 2} increases from 0.5 to 3.5 GeV{sup 2}, indicating for the first time a definite difference in the spatial distribution of charge and magnetization currents in the proton.

Research Organization:: Thomas Jefferson National Accelerator Facility, Newport News, VA (US)

Sponsoring Organization:: USDOE Office of Energy Research (ER) (US)

DOE Contract Number:: AC05-84ER40150

OSTI ID:: 801496

Report Number(s):: JLAB-PHY-00-48; DOE/ER/40150-2180

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 7 Vol. 84; ISSN 0031-9007; ISSN PRLTAO

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

References (27)

Electro-magnetic nucleon form factors and their spectral functions in soliton models Holzwarth, G. Zeitschrift für Physik A: Hadrons and Nuclei, Vol. 356, Issue 1 https://doi.org/10.1007/BF02769237	journal	December 1996
Measurements of elastic electron-proton scattering at large momentum transfer Sill, A. F.; Arnold, R. G.; Bosted, P. E. Physical Review D, Vol. 48, Issue 1 https://doi.org/10.1103/PhysRevD.48.29	journal	July 1993
Relativistic constituent-quark model of nucleon form factors Chung, P. L.; Coester, F. Physical Review D, Vol. 44, Issue 1 https://doi.org/10.1103/PhysRevD.44.229	journal	July 1991
Electromagnetic form factors of the proton at squared four-momentum transfers between 10 and 50 fm−2 Berger, Ch.; Burkert, V.; Knop, G. Physics Letters B, Vol. 35, Issue 1 https://doi.org/10.1016/0370-2693(71)90448-5	journal	April 1971
Measurements of the electric and magnetic form factors of the proton from Q 2 =1.75 to 8.83 (GeV/ c ) 2 Andivahis, L.; Bosted, P. E.; Lung, A. Physical Review D, Vol. 50, Issue 9 https://doi.org/10.1103/PhysRevD.50.5491	journal	November 1994
Electromagnetic form factors of the nucleon in the few GeV region Kroll, P.; Sch�rmann, M.; Schweiger, W. Zeitschrift f�r Physik A Hadrons and Nuclei, Vol. 338, Issue 3 https://doi.org/10.1007/BF01288198	journal	September 1991
Comparison of Polarization Observables in Electron Scattering from the Proton and Deuteron Milbrath, B. D.; McIntyre, J. I.; Armstrong, C. S. Physical Review Letters, Vol. 80, Issue 3 https://doi.org/10.1103/PhysRevLett.80.452	journal	January 1998
Backward-Angle Electron-Proton Elastic Scattering and Proton Electromagnetic Form Factors Price, L. E.; Dunning, J. R.; Goitein, M. Physical Review D, Vol. 4, Issue 1 https://doi.org/10.1103/PhysRevD.4.45	journal	July 1971
Dispersion-theoretical analysis of the nucleon electromagnetic form factors Mergell, P.; Meißner, Ulf-G.; Drechsel, D. Nuclear Physics A, Vol. 596, Issue 3-4 https://doi.org/10.1016/0375-9474(95)00339-8	journal	January 1996
Semi-phenomenological fits to nucleon electromagnetic form factors Iachello, F.; Jackson, A. D.; Lande, A. Physics Letters B, Vol. 43, Issue 3 https://doi.org/10.1016/0370-2693(73)90266-9	journal	February 1973
Erratum: Comparison of Polarization Observables in Electron Scattering from the Proton and Deuteron [Phys. Rev. Lett. 80, 452 (1998)] Milbrath, B. D.; McIntyre, J. I.; Armstrong, C. S. Physical Review Letters, Vol. 82, Issue 10 https://doi.org/10.1103/PhysRevLett.82.2221	journal	March 1999
Measurement of the proton electromagnetic form factors via the spin transfer reaction 1H(e→,e′p→) Quéméner, G.; Jones, M. K.; Perdrisat, C. F. Nuclear Physics A, Vol. 654, Issue 1 https://doi.org/10.1016/S0375-9474(00)88497-3	journal	July 1999
Nucleon form factors and O(a) improvement Capitani, S.; Göckeler, M.; Horsley, R. Nuclear Physics B - Proceedings Supplements, Vol. 73, Issue 1-3 https://doi.org/10.1016/S0920-5632(99)85052-X	journal	March 1999
Polarization transfer in elastic electron scattering from nucleons and deuterons Arnold, Raymond G.; Carlson, Carl E.; Gross, Franz Physical Review C, Vol. 23, Issue 1 https://doi.org/10.1103/PhysRevC.23.363	journal	January 1981
Analysis of electromagnetic nucleon form factors Höhler, G.; Pietarinen, E.; Sabba-Stefanescu, I. Nuclear Physics B, Vol. 114, Issue 3 https://doi.org/10.1016/0550-3213(76)90449-1	journal	November 1976
Scaling laws for large-momentum-transfer processes Brodsky, Stanley J.; Farrar, Glennys R. Physical Review D, Vol. 11, Issue 5 https://doi.org/10.1103/PhysRevD.11.1309	journal	March 1975
Semiphenomenological synthesis of meson and quark dynamics and the E.M. structure of the nucleon Gari, M.; Kr�mpelmann, W. Zeitschrift f�r Physik A Atoms and Nuclei, Vol. 322, Issue 4 https://doi.org/10.1007/BF01415153	journal	December 1985
High Energy Elastic Scattering of Electrons on Protons Rosenbluth, M. N. Physical Review, Vol. 79, Issue 4 https://doi.org/10.1103/PhysRev.79.615	journal	August 1950
On the Q2-dependence of the N → Nγ and Δ → Nγ transition form factors in a quark model at Q2 < 4 GeV2 Aznauryan, I. G. Physics Letters B, Vol. 316, Issue 2-3 https://doi.org/10.1016/0370-2693(93)90343-G	journal	October 1993
Electromagnetic form factors of the nucleon in an improved quark model Lu, D. H.; Thomas, A. W.; Williams, A. G. Physical Review C, Vol. 57, Issue 5 https://doi.org/10.1103/PhysRevC.57.2628	journal	May 1998
Deeply virtual Compton scattering Ji, Xiangdong Physical Review D, Vol. 55, Issue 11 https://doi.org/10.1103/PhysRevD.55.7114	journal	June 1997
Measurement of the ratio of the proton form factors, GE/GM, at high momentum transfers and the question of scaling Litt, J.; Buschhorn, G.; Coward, D. H. Physics Letters B, Vol. 31, Issue 1 https://doi.org/10.1016/0370-2693(70)90015-8	journal	January 1970
Gauge-Invariant Decomposition of Nucleon Spin Ji, Xiangdong Physical Review Letters, Vol. 78, Issue 4 https://doi.org/10.1103/PhysRevLett.78.610	journal	January 1997
Measurement of proton and neutron electromagnetic form factors at squared four-momentum transfers up to 3 (GeV/c)2 Bartel, W.; Büsser, F. -W.; Dix, W. -R. Nuclear Physics B, Vol. 58, Issue 2 https://doi.org/10.1016/0550-3213(73)90594-4	journal	July 1973
Structure of the Proton Chambers, E. E.; Hofstadter, R. Physical Review, Vol. 103, Issue 5 https://doi.org/10.1103/PhysRev.103.1454	journal	September 1956
Pionic Corrections to Nucleon Electromagnetic Properties in a Light-Cone Framework Dziembowski, Z.; Holtmann, H.; Szczurek, A. Annals of Physics, Vol. 258, Issue 1 https://doi.org/10.1006/aphy.1997.5693	journal	July 1997
Measurements of the proton elastic form factors for 1 ≤ Q 2 ≤ 3 ( G e V / c ) 2 at SLAC Walker, R. C.; Filippone, B. W.; Jourdan, J. Physical Review D, Vol. 49, Issue 11 https://doi.org/10.1103/PhysRevD.49.5671	journal	June 1994

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