0000000000585514

AUTHOR

Michio Kohno

showing 2 related works from this author

Proton distortion effects and meson exchange current contributions in the (e,e′p) reaction

1988

It is demonstrated that proton distortion effects could explain the relative enhancement of transverse to longitudinal response in the recent ($e,{e}^{\ensuremath{'}}p$) reactions on $^{12}\mathrm{C}$. The spin-orbit field is essential to bring about this enhancement. The role of the convection current is pointed out. Favorable contributions from pion-pair and isobar-excitation currents are also found.

PhysicsNuclear reactionNuclear and High Energy PhysicsMesonProtonNuclear TheoryHadronElementary particleCoupling (probability)Nuclear physicsBaryonAtomic physicsNuclear ExperimentNucleonPhysical Review C
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Pion-induced η production on nuclei

1990

Abstract Low-energy η production on nuclei is investigated in a DWIA framework, using a Green function method. The η potential is constructed by folding medium-modified η N → S 11 → η N scattering amplitudes with nuclear wave functions. A phenomenological spreading potential is introduced for the intermediate S 11 resonance. Calculated ( π + , p ) η cross sections on 12 C and 16 O with the spreading potential having an imaginary part of the order of −50 ∼ −100 MeV compare favorably with recent experimental data. It is also shown that the energy dependence of the ( π + , η ) inclusive spectra is nicely reproduced, though the magnitude is somewhat underestimated.

Scattering amplitudePhysicsNuclear and High Energy PhysicsPionImaginary partProduction (computer science)Atomic physicsWave functionResonance (particle physics)Spectral lineNuclear Physics A
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