Proton compton scattering at backward angles in the energy range from 400 MeV to 1050 MeV

Wada, Y.; Egawa, K.; Imanishi, A.; Ishii, T.; Kato, S.; Ukai, K.; Naito, Fuminori; Nara, Hideki; Noguchi, Toshihiko; Takahashi, K.

doi:10.1016/0550-3213(84)90552-2

Cited by 24 publications

(19 citation statements)

References 34 publications

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“…Compton scattering by the proton in the ∆ energy-region has played an important role in recent nucleonstructure investigations carried out at the tagged-photon facilities at Saskatoon (SAL) [1], Brookhaven (LEGS) [2][3][4] and Mainz (MAMI) [5][6][7][8]. In addition, data are available for the second resonance region measured in Tokyo [9,10] and Bonn [11] in the early 1980's. Though important results have been obtained in these former experiments, the experimental techniques had the disadvantage that only one angle θ and a relatively small interval of photon energies E γ were available with a given configuration of the experimental set-up.…”

Section: Introductionmentioning

confidence: 99%

Compton scattering by the proton

et al. 2001

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Compton scattering by the proton has been measured over a wide range covering photon energies 250 MeV < ∼ E γ < ∼ 800 MeV and photon scattering angles 30 • < ∼ θ lab γ < ∼ 150 • , using the tagged-photon facility at MAMI (Mainz) and the large-acceptance arrangement LARA. The data are in good agreement with the dispersion theory based on the SAID-SM99K parameterization of photo-meson amplitudes. From the subset of data between 280 and 360 MeV the resonance pion-photoproduction amplitudes were evaluated leading to the multipole E2/M1 ratio EMR(340 MeV) = (−1.6 ± 0.4 stat+syst ± 0.2 model )%. From all data below 455 MeV the proton's backward spin polarizability was determined to be γ π = (−37.9 ± 0.6 stat+syst ± 3.5 model ) × 10 −4 fm 4 .

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Section: Introductionmentioning

confidence: 99%

Compton scattering by the proton

et al. 2001

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“…Cross sections have been measured up to W = 1.9 GeV, at Q 2 = 1 GeV 2 and backward angle [42], (♦) [43], ( ) [44], ( ) [45], ( ) [46], (×) [47]). The solid curve is an s −6 power law normalized to the W = 2.55 GeV RCS Cornell point.…”

Section: Vcs In the Resonance Regionmentioning

confidence: 99%

Virtual Compton scattering at low energy and the generalized polarizabilities of the nucleon

Fonvieille

2005

Progress in Particle and Nuclear Physics

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Virtual Compton scattering on the nucleon: γ * N → γ N is a new and rapidly developing field at low and high energies, with the emergence of recent concepts such as generalized parton distributions at high energy, and Generalized Polarizabilities (GPs) at low energy. This lecture is about the low energy part, i.e. for energies in the (γ p) center-of-mass mainly up to the ∆(1232) resonance region. I review the concept of GPs and the experiments dedicated to their measurement.

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“…The energy dependence of the cross sections exhibits a characteristic enchancement at the energies of I-III nN resonances. Experimental data in the resonance region are usually analysed phenomenologically, in the frame of the isobar model [1,2] or dispersion relations with fixed I [3], in order to subtract the resonance parameters, including yN couplings. At the same time, the angular dependence of Compton scattering cross sections for the energies above 0.7 GeV is similar to that of the diffraction scattering of hadrons in accordance with the predictions of the vector dominance model (VDM) 141.…”

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confidence: 99%