Measurement of Tensor Polarization in Elastic Electron-Deuteron Scattering at Large Momentum Transfer

Abbott, D.; Ahmidouch, A.; Anklin, H.; Arvieux, J.; Ball, J.; Beedoe, S.; Beise, E. J.; Bimbot, L.; Boeglin, W.; Breuer, H.; Brindza, P.; Carlini, R.; Chant, N. S.; Danagoulian, S.; Dow, K.; Ducret, J.E.; Dunne, J.; Ewell, L.; Eyraud, L.; Furget, C.; Garçon, M.; Gilman, R.; Glashausser, C.; Guèye, P.; Gustafsson, K.; Hafidi, K.; Honegger, A.; Jourdan, J.; Kox, S.; Kumbartzki, G.; Lu, Lanchun; Lung, A.; Mack, D.; Markowitz, P.; McIntyre, Justin I.; Meekins, D.; Merchez, F.; Mitchell, J.; Mohring, R.; Mtingwa, S.; Mrktchyan, H.; Pitz, D.; Qin, L.; Ransome, R. D.; Réal, J. S.; Roos, P.G.; Rutt, P. M.; Sawafta, R.; Stepanyan, S.; Tieulent, R.; Tomasi–Gustafsson, E.; Turchinetz, W.; Vansyoc, K.; Volmer, J.; Voutier, E.; Vulcan, W.; Williamson, C. F.; Wood, S. A.; Yan, Chao; Zhao, J.; Wenheng, Zhao

doi:10.1103/physrevlett.84.5053

Cited by 117 publications

(85 citation statements)

References 29 publications

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“…Results for T 20 and T 21 [grey (red online) dots] compared to previous data [4] (open dots), [5,6] (open upright triangles), [7] (solid upright triangles), [8] (solid dots), [9] (open squares), [10] (solid squares), [11] (open stars), [12] (solid down triangles), and various theoretical predictions. The theoretical curves are nonrelativistic models with relativistic corrections [13] (long dashed line), [14] (dashed line), relativistic models [15] (dash-dotted line), [16] (dotted line), and effective field theory [17,18] (grey error band).…”

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confidence: 99%

“…During the last two decades, measurements of tensor-polarized observables, made possible by innovative accelerator and target technologies, have provided new experimental information to understand the electromagnetic structure of the deuteron [4][5][6][7][8][9][10][11][12] and put strong constraints on nuclear models, e.g., Hamiltonian dynamics [13,14], explicitly covariant models [15,16], as well as the latest developments in effective field theory for low-Q physics [17,18]. In this Letter, a highprecision measurement of the deuteron tensor analyzing powers T 20 and T 21 over a broad range of low-momentum transfer is reported.…”

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confidence: 99%

“…Tensor-polarized observables can be measured as tensor moments of recoiling deuterons with unpolarized beam and target [4,8,11] or as tensor asymmetries with a tensor-polarized target [5][6][7]9,10,12]. The experiment reported in this Letter used a highly polarized deuterium gas target with a large acceptance magnetic spectrometer, which is different from all previous experiments.…”

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confidence: 99%

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Precise Measurement of Deuteron Tensor Analyzing Powers with BLAST

et al. 2011

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We report a precision measurement of the deuteron tensor analyzing powers T(20) and T(21) at the MIT-Bates Linear Accelerator Center. Data were collected simultaneously over a momentum transfer range Q=2.15-4.50 fm(-1) with the Bates Large Acceptance Spectrometer Toroid using a highly polarized deuterium internal gas target. The data are in excellent agreement with calculations in a framework of effective field theory. The deuteron charge monopole and quadrupole form factors G(C) and G(Q) were separated with improved precision, and the location of the first node of G(C) was confirmed at Q=4.19±0.05 fm(-1). The new data provide a strong constraint on theoretical models in a momentum transfer range covering the minimum of T(20) and the first node of G(C).

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Precise Measurement of Deuteron Tensor Analyzing Powers with BLAST

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“…6 and 7. [16] and [17] (circles and boxes, respectively). We have also found that TPE yields only slight changes (not more than a few percent) in C 10 and C 11 correlations; see Fig.…”

Section: Numerical Results and Conclusionmentioning

confidence: 99%

Two-photon exchange and elastic scattering of longitudinally polarized electrons on polarized deuterons

et al. 2011

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Structure functions and polarization observables in elastic scattering of longitudinally polarized electrons on polarized deuterons are considered within the approximation of one-photon plus two-photon exchange. It is shown that the contribution of two-photon exchange to the generalized deuteron structure function A is of the order of few percent, while the contribution to the generalized structure function B is of the order of 10%-20%. We have found that the components T 20 and T 21 of the tensor analyzing power are mainly determined by one-photon exchange but that T 22 is mainly determined by interference between one-photon exchange and two-photon exchange. We have also considered the polarization observables T 11 , C 21 , and C 22 , which are proportional to the imaginary part of the reaction amplitude and vanish in the framework of one-photon exchange.

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“…The deuteron density distribution has been obtained both from the wave function calculated with the Paris as well as CD-Bonn potentials [18], and from the experimental charge form factors [19]. Moreover, since a true microscopic treatment leads to a non-local optical potential, we have to include also a non-locality correction to the DF real potential [2] because we must use equivalent local potentials (ELP) within the available standard codes.…”

Section: Semi-microscopic Analysis Of Deuteron Elastic Scatteringmentioning

confidence: 99%

Low energy deuteron elastic scattering on light and medium nuclei

Avrigeanu

Leeb²,

Oertzen

et al. 2007

Nd2007

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Abstract. An analysis of the elastic scattering of deuterons on 6,7 Li, 27 Al, 54,56,58 Fe, 63,65 Cu, and 93 Nb for energies from 3 to 60 MeV has been carried out using a semi-microscopic optical potential which consists of a Coulomb term, a real double-folding (DF) potential, a phenomenological imaginary potential and a spin-orbit component. No normalization constant was involved in this work for the DF real potential, in order to emphasize the effects of further corrections requested by a satisfactory description of the experimental data. Moreover, an empirical non-locality correction to the microscopic real potential has been added in the case of the d + 6 Li scattering. By taking into account also the dispersion correction, a good agreement of the experimental and semi-microscopic elastic scattering angular distribution has been obtained. The imaginary and spin-orbit potential parameters obtained by the semimicroscopic data analysis have been kept fixed within a second step of the present analysis, in order to obtain a full phenomenological optical potential needed for applications. As a global result, one may note differences of about 10-15% between the deuteron reaction cross sections corresponding to the present improved optical potential and those obtained using the default input parameters within the TALYS code, while enlarged changes are shown by the calculated elastic-scattering angular distributions. The differences with respect to the evaluated total reaction cross sections of the ACSELAM library are about 25-30%.

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Measurement of Tensor Polarization in Elastic Electron-Deuteron Scattering at Large Momentum Transfer

Cited by 117 publications

References 29 publications

Precise Measurement of Deuteron Tensor Analyzing Powers with BLAST

Precise Measurement of Deuteron Tensor Analyzing Powers with BLAST

Two-photon exchange and elastic scattering of longitudinally polarized electrons on polarized deuterons

Low energy deuteron elastic scattering on light and medium nuclei

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