Elastic γ d Scattering

Levchuk, M. I.; L’vov, A. I.

doi:10.1007/978-3-7091-9453-9_63

Cited by 20 publications

(21 citation statements)

References 5 publications

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“…The electric polarizability of the deuteron, α E0 , has been investigated thoroughly with N N potential models 54,55,56,57 . To a very high precision one obtains α E0 = 0.6328 ± 0.0017 fm 3 with those techniques.…”

Section: Deuteron Polarizabilitiesmentioning

confidence: 99%

From Hadrons to Nuclei: Crossing the Border

Beane

Bedaque

Haxton

et al. 2001

At the Frontier of Particle Physics

123

190

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The study of nuclei predates by many years the theory of quantum chromodynamics. More recently, effective field theories have been used in nuclear physics to "cross the border" from QCD to a nuclear theory. We are now entering the second decade of efforts to develop a perturbative theory of nuclear interactions using effective field theory. This chapter describes the current status of these efforts.

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Section: Deuteron Polarizabilitiesmentioning

confidence: 99%

From Hadrons to Nuclei: Crossing the Border

Beane

Bedaque

Haxton

et al. 2001

At the Frontier of Particle Physics

123

190

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“…These are the nuclei where a reasonable amount of experimental data on Compton scattering are available. In comparison to these the investigations of the deuteron -though being the most fundamental ones -are at the very beginning and we give here only few references to recent experimental and theoretical works [131][132][133][134][135][136].…”

Section: Organization Of the Present Papermentioning

confidence: 99%

Compton scattering by nuclei

et al. 2000

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The concept of Compton scattering by even-even nuclei from giant-resonance to nucleon-resonance energies and the status of experimental and theoretical researches in this field are outlined. The description of Compton scattering by nuclei starts from different complementary approaches, namely from second-order S-matrix and from dispersion theories. Making use of these, it is possible to incorporate into the predicted nuclear scattering amplitudes all the information available from other channels, viz. photon-nucleon and photon-meson channels, and to efficiently make use of models of the nucleon, the nucleus and the nucleon-nucleon interaction. The total photoabsorption cross section constrains the nuclear scattering amplitude in the forward direction. The specific information obtained from Compton scattering therefore stems from the angular dependence of the nuclear scattering amplitude, providing detailed insight into the dynamics of the nuclear and nucleon degrees of freedom and into the interplay between them. Nuclear Compton scattering in the giant-resonance energy-region provides information on the dynamical properties of the in-medium mass of the nucleon. Most prominently, the electromagnetic polarizabilities of the nucleon in the nuclear medium can be extracted from nuclear Compton scattering data obtained in the quasideuteron energy-region. In our description of this latter process special emphasis is laid upon the exploration of many-body and two-body effects entering into the nuclear dynamics. Recent results are presented for two-body effects due to the mesonic seagull amplitude and due to the excitation of nucleon internal degrees of freedom accompanied by meson exchanges. Due to these studies the inmedium electromagnetic polarizabilities are by now well understood, whereas the understanding of nuclear Compton scattering in the ∆-resonance range is only at the beginning. Furthermore, phenomenological methods how to include retardation effects in the scattering amplitude are discussed and compared with model predictions.

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“…It should be noted that coherent elastic (Compton) scattering by the deuteron provides a further method for determining the electromagnetic polarizabilities of the neutron. An evaluation of first experiments [11,12] using the theoretical model of [13,14] gave the values of α n + β n = 20 ± 3 and α n − β n = −2 ± 3. Progress in the application of this method may be expected from an experiment carried out at MAX-Lab [15] and from further improvements of the theoretical basis for the data analysis.…”

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confidence: 99%

Neutron Polarizabilities Investigated by Quasifree Compton Scattering from the Deuteron

et al. 2002

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Measuring Compton scattered photons and recoil neutrons in coincidence, quasifree Compton scattering by the neutron has been investigated at MAMI (Mainz) at theta(lab)(gamma) = 136 degrees in an energy range from 200 to 400 MeV. From the data a polarizability difference of alpha(n)-beta(n) = 9.8+/-3.6(stat)+2.1-1.1(syst)+/-2.2(model) in units of 10(-4) fm(3) has been determined. In combination with the polarizability sum alpha(n)+beta(n) = 15.2+/-0.5 deduced from photoabsorption data, the first precise results for the neutron electric and magnetic polarizabilities, alpha(n) = 12.5+/-1.8(stat)+1.1-0.6(syst)+/-1.1(model) and beta(n) = 2.7-/+1.8(stat)+0.6-1.1(syst)-/+1.1(model), are obtained.

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Elastic γ d Scattering

Cited by 20 publications

References 5 publications

From Hadrons to Nuclei: Crossing the Border

From Hadrons to Nuclei: Crossing the Border

Compton scattering by nuclei

Neutron Polarizabilities Investigated by Quasifree Compton Scattering from the Deuteron

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