Polarization transfer in the 4HeH reaction

Dieterich, Sonja; Bartsch, P.; Baumann, D.; Bermuth, J.; Bohinc, Klemen; Böhm, R.; Bosnar, D.; Derber, S.; Ding, M.; Distler, M. O.; Ewald, I.; Jm, Friedrich; Gilman, R.; Glashausser, C.; Hauger, M.; Jennewein, P.; Jourdan, J.; Kelly, James; Köhl, M.; Kozlov, A.; Krygier, K. W.; Kumbartzki, G.; Lac, J.; Liesenfeld, A.; Merkel, H.; Müller, U.; Neuhausen, R.; Pospischil, Th.; Ransome, R. D.; Rohe, D.; Rosner, G.; Schmieden, H.; Seimetz, M.; Sick, I.; Strauch, S.; Udías, J. M.; Vignote, J. R.; Wagner, Andreas; Walcher, Th.; Warren, G.; Weis, M.

doi:10.1016/s0370-2693(01)00052-1

Cited by 129 publications

(99 citation statements)

References 45 publications

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“…The ratio G Ep /G M p in elastic 1 H( e, e ′ p) was also measured at the MAMI in a dedicated experiment [Pos01], and as a calibration measurement [Die01] at a Q 2 of ≈0.4 Gev 2 . The ratio values found were in agreement with other polarization measurements as well as Rosenbluth measurements.…”

Section: Proton Form Factor Measurements With Polarization Experimentsmentioning

confidence: 99%

Nucleon electromagnetic form factors

Perdrisat

Punjabi

Vanderhaeghen

2007

Progress in Particle and Nuclear Physics

463

583

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There has been much activity in the measurement of the elastic electromagnetic proton and neutron form factors in the last decade, and the quality of the data has been greatly improved by performing double polarization experiments, in comparison with previous unpolarized data. Here we review the experimental data base in view of the new results for the proton, and neutron, obtained at MIT-Bates, MAMI, and JLab. The rapid evolution of phenomenological models triggered by these high-precision experiments will be discussed, including the recent progress in the determination of the valence quark generalized parton distributions of the nucleon, as well as the steady rate of improvements made in the lattice QCD calculations.

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Section: Proton Form Factor Measurements With Polarization Experimentsmentioning

confidence: 99%

Nucleon electromagnetic form factors

Perdrisat

Punjabi

Vanderhaeghen

2007

Progress in Particle and Nuclear Physics

463

583

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“…In particular, this method seems to work very well for the description of the form factors [15] and structure functions [16] of a free nucleon. It would be interesting to extend this successful description of the free nucleon to the investigation of medium modifications of nucleon properties, which is currently a very active field both experimentally and theoretically -an exciting example are the recent studies of nucleon form factors in ( e, e ′ p) reactions [17]. For this purpose, however, one needs the equation of state, and one first has to solve the problem of the stability of nuclear matter.…”

Section: Introductionmentioning

confidence: 99%

The stability of nuclear matter in the Nambu–Jona-Lasinio model

2001

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Using the Nambu-Jona-Lasinio model to describe the nucleon as a quark-diquark state, we discuss the stability of nuclear matter in a hybrid model for the ground state at finite nucleon density. It is shown that a simple extension of the model to simulate the effects of confinement leads to a scalar polarizability of the nucleon. This, in turn, leads to a less attractive effective interaction between the nucleons, helping to achieve saturation of the nuclear matter ground state. It is also pointed out that that the same effect naturally leads to a suppression of "Z-graph" contributions with increasing scalar potential.PACS: 12.39 Fe (chiral Lagrangians), 12.39 Ki (relativistic quark model), 21.65+f (nuclear matter), 24.85+p (quarks, gluons and QCD in nuclei and nuclear processes). Keywords: quark-diquark structure of the nucleon, nuclear matter stability, Nambu-Jona-Lasinio model for quarks.

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“…2 and 3 the induced polarization has only a normal (n) component; see Eqs. (16)(17)(18). Hence for φ s = ∆φ = 0 (north and south poles and left-hand panels in Fig.…”

Section: Cross Section and Semi-classical Picturementioning

confidence: 93%

“…In particular, many of the latest studies have been focused on the polarization transfer asymmetry in reactions initiated by polarized electrons [13,14,15,16]. For these significant effort is being expended in investigations of light nuclei, with much of the focus being placed on the analysis of the polarization transfer in the 4 He( e, e ′ p) 3 H reaction which has recently been measured at MAMI [17,18]. One of the goals of such studies is to obtain information from the measured polarization transfer ratios about medium modifications of the proton form factor.…”

Section: Introductionmentioning

confidence: 99%

Final-state interaction and recoil polarization in reactions: comparison with the polarized target case

et al. 2005

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A study of the total cross section for polarized proton knockout in (e, e ′ p) reactions is carried out for the closed-shell nucleus 40 Ca. The dependence of FSI effects on polarization observables viewed as functions of the nucleon polarization angles is analyzed and interpreted within the basis of a semi-classical model for the orbit of the struck nucleon and trajectory of the ejected nucleon. A comparison with the case of a 39 K polarized target and unpolarized protons is performed.

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Polarization transfer in the 4HeH reaction

Cited by 129 publications

References 45 publications

Nucleon electromagnetic form factors

Nucleon electromagnetic form factors

The stability of nuclear matter in the Nambu–Jona-Lasinio model

Final-state interaction and recoil polarization in reactions: comparison with the polarized target case

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