Erratum: Comparison of Polarization Observables in Electron Scattering from the Proton and Deuteron [Phys. Rev. Lett. 80, 452 (1998)]

Milbrath, Brian D.; McIntyre, Justin I.; Armstrong, Christopher; Barkhuff, D.; Bertozzi, W.; Chen, J. P.; Dale, D.; Dodson, G.; Dow, K.; Epstein, M. B.; Farkhondeh, M.; Finn, John M.; Gilad, S.; Jones, M.; Joo, K. S.; Kelly, James; Kowalski, S.; Lourie, R. W.; Madey, R.; Margaziotis, D. J.; Markowitz, P.; Mertz, C.; Mitchell, J.; Perdrisat, C. F.; Punjabi, V.; Qin, L.; Rutt, P. M.; Sarty, A. J.; Tieger, D.; Tschalaer, C.; Turchinetz, W.; Ulmer, P. E.; Verst, S.P. Van; Warren, G.; Weinstein, L. B.; Woo, R. J.

doi:10.1103/physrevlett.82.2221

Cited by 100 publications

(83 citation statements)

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“…To date only two other experiments on the d( e, e ′ p )n reaction exist, one performed at the Mainz Microtron (MAMI) facility [24] and the other at the MIT-Bates Laboratory [25]. They were restricted to squared fourmomentum transfers of Q 2 =0.3 (GeV/c) 2 (Mainz) and Q 2 =0.38 and 0.50 (GeV/c) 2 (Bates) and also to low p m .…”

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confidence: 99%

Polarization transfer in theH2(e→,
Hu¹,
Jones²,
Ulmer³
et al. 2006
Phys. Rev. C
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The recoil proton polarization was measured in the d( e, e ′ p )n reaction in Hall A of the Thomas Jefferson National Accelerator Facility (JLab). The electron kinematics were centered on the quasielastic peak (xBj ≈ 1) and included three values of the squared four-momentum transfer, Q 2 =0.43, 1.00 and 1.61 (GeV/c) 2 . For Q 2 =0.43 and 1.61 (GeV/c) 2 , the missing momentum, pm, was centered at zero while for Q 2 =1.00 (GeV/c) 2 two values of pm were chosen: 0 and 174 MeV/c. At low pm, the Q 2 dependence of the longitudinal polarization, P ′ z , is not well described by a state-of-the-art calculation. Further, at higher pm, a 3.5σ discrepancy was observed in the transverse polarization, P ′x . Understanding the origin of these discrepancies is important in order to confidently extract the neutron electric form factor from the analogous d( e, e ′ n )p experiment.

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confidence: 99%

Polarization transfer in theH2(e→,
Hu¹,
Jones²,
Ulmer³
et al. 2006
Phys. Rev. C
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36
1
18
1
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“…We conclude our discussion of these various theoretical calculations in this subsection [212,[215][216][217], and those for ,IGE/GM are from [202-205, 207, 210, 213, 214]. The recent results reported by Madey et al [218] and Warren et al [209] are not shown here but will be presented later.…”

Section: Comparison Of Calculations With Datamentioning

confidence: 87%

“…Although this equation is classical in origin, it is completely equivalent to the quantum-mechanical Heisenberg equation of motion for the spin operator. This equation of motion, as written above, is valid only in the particle's rest frame; however, this result can be generalized to any 212 inertial reference frame. In what follows, we outline the relativistic generalization of this problem given by Jackson [329].…”

Section: Spin Precession In Electromagnetic Fieldsmentioning

confidence: 99%

“…The data shown for ppGEp/GMp are from [212,[215][216][217], and those for pInGEn/GM are from [202][203][204][205]207,209,210,213,214,218]. All published polarized results for the nucleon form factors are now presented here.…”

Section: Factors With Theoretical Calculationsmentioning

confidence: 99%

“…2-28, we compare polarized results for the proton form factor ratio, IpGEp/GMp, [212,[215][216][217] with the unpolarized results [39,41,44,48,51,54,60, 621 shown previously in Fig. 2 Theoretically, higher-order two-photon exchange 8 and its effect on elastic electronproton scattering has been considered recently by number of different authors (see, e.g., Afanasev, Akushevich, and Merenkov [221]; Guichon and Vanderhaeghen [222]; and Blunden, Melnitchouk, and Tjon [223]) in an attempt to understand this discrepancy from a theoretical point of view.…”

Section: Nucleon Form Factors Proton Form Factorsmentioning

confidence: 99%

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The neutron electric form factor to Q² = 1.45 (GeV/c)²

Plaster¹

2004

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The nucleon elastic electromagnetic form factors are fundamental quantities needed for an understanding of nucleon and nuclear electromagnetic structure. The evolution of the Sachs electric and magnetic form factors with Q 2 , the square of the fourmomentum transfer, is related to the distribution of charge and magnetization within the nucleon. High precision measurements of the nucleon form factors are essential for stringent tests of our current theoretical understanding of confinement within the nucleon.Measurements of the neutron form factors, in particular, those of the neutron electric form factor, have been notoriously difficult due to the lack of a free neutron target and the vanishing integral charge of the neutron. Indeed, a precise measurement of the neutron electric form factor has eluded experimentalists for decades; however, with the advent of high duty-factor polarized electron beam facilities, experiments employing polarization degrees of freedom have finally yielded the first precise measurements of this fundamental quantity.Following a general overview of the experimental and theoretical status of the nucleon form factors, a detailed description of an experiment designed to extract the neutron electric form factor from measurements of the neutron's recoil polarization in quasielastic 2 H(e, e')lH scattering is presented. The experiment described here employed the Thomas Jefferson National Accelerator Facility's longitudinally polarized electron beam, a magnetic spectrometer for detection of the scattered electron, and a neutron polarimeter designed specifically for this experiment. Measurements were conducted at three Q 2 values of 0.45, 1.13, and 1.45 (GeV/c) 2 , and the final results extracted from an analysis of the data acquired in this experiment are reported and compared with recent theoretical predictions for the nucleon form factors. Next, I would like to thank those who I credit most for my development: Jim Kelly and Andrei Semenov. At times, I found Jim's extremely high standards and desire for rigor to be exasperating, especially during the development of our simulation code and discussions of formalism (e.g., the "dreaded" Wigner rotation!), but, in retrospect, I am glad that I was constantly challenged to do something in an even better way and never permitted to give up. Indeed, I didn't fully appreciate the rigor of our analysis until our results were final, but hindsight is always 20/20. Also, I thank Jim for numerous comments and suggestions on this thesis; it is much better and much more complete because of his many suggestions. Andrei was the true guru (read: czar) of our analysis efforts, and he instilled in me the importance of careful work.I especially appreciate Andrei's timely responses to the numerous questions I always had concerning the analysis and the various analysis tools that we used; if there was someone who was sure to know the answer, that person was Andrei. Without Andrei, our analysis efforts would never have gotten off the ground. I also offer thank...

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Elastic form factor experiments: a serial story

Köhl¹

2011

Pavi09

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Erratum: Comparison of Polarization Observables in Electron Scattering from the Proton and Deuteron [Phys. Rev. Lett. 80, 452 (1998)]

Cited by 100 publications

References 18 publications

Polarization transfer in theH2(e→,
Hu¹,
Jones²,
Ulmer³
et al. 2006
Phys. Rev. C
Self Cite
36
1
18
1
View full text Add to dashboard Cite

Polarization transfer in theH2(e→,
Hu¹,
Jones²,
Ulmer³
et al. 2006
Phys. Rev. C
Self Cite
36
1
18
1
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The neutron electric form factor to Q² = 1.45 (GeV/c)²

Elastic form factor experiments: a serial story

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Erratum: Comparison of Polarization Observables in Electron Scattering from the Proton and Deuteron [Phys. Rev. Lett. 80, 452 (1998)]

Cited by 100 publications

References 18 publications

Polarization transfer in theH2(e→,Hu1, Jones2, Ulmer3 et al. 2006Phys. Rev. CSelf Cite361181View full textAdd to dashboardCite

Polarization transfer in theH2(e→,Hu1, Jones2, Ulmer3 et al. 2006Phys. Rev. CSelf Cite361181View full textAdd to dashboardCite

The neutron electric form factor to Q² = 1.45 (GeV/c)²

Elastic form factor experiments: a serial story

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Polarization transfer in theH2(e→,
Hu¹,
Jones²,
Ulmer³
et al. 2006
Phys. Rev. C
Self Cite
36
1
18
1
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Polarization transfer in theH2(e→,
Hu¹,
Jones²,
Ulmer³
et al. 2006
Phys. Rev. C
Self Cite
36
1
18
1
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