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Pion correlations are calculated for a recently proposed model of ultrarelativistic heavy-ion collisions. Ingredients of the model are evaporation of globs of quark-gluon plasma followed by pion scattering in the final state. The model predicts strong correlations between the longitudinal...
The influence of ground state correlations on the sum rules for M 1, M 3, and M 5 excitation of N=28 nuclei is investigated. When combined with use of a renormalized single-particle matrix element which takes into account effects of core polarization, isobars, and meson exchange currents, the...
The interpretation of the observed narrow Σ -hypernuclear states in terms of poles of the S matrix in the second quadrant of the complex wave-number plane is considered. The value obtained for the time delay originated by the corresponding optical potential reinforces such an interpretation.
Transforming both the overlap energy kernel and overlap functionals into polynomial forms, the well-known integral of the number-projected BCS theory is performed analytically. We then obtain the projected ground state BCS energy in the closed form.
One-proton and one-neutron stripping reactions induced by a 480 MeV C 12 beam bombarding a Pb 208 target have been studied using a high resolution energy loss magnetic spectrometer. The reactions are governed by two selection rules which are naturally contained in the one-step exact finite range...
We study the generator coordinate method for spin and isospin projection in the chiral-bag-plus-Skyrmion hybrid model. The coherent state is applied to construct the pion intrinsic state. We perform the sixfold integrations numerically to evaluate the matrix elements of the energy in the...
A survey of observed E 0 transition strength shows that some of the largest strength occurs for transitional nuclei whenever large mixing between almost spherical and largely deformed shapes results. This leads to the conclusion that large E 0 strength is not an indication of coexisting shapes...
Two rotational band structures have been identified in doubly odd Pr 130 following the Cd 110 ( 28 Si, α p3n ) 130 Pr reaction. One band, having no signature splitting, is believed to be built on the near-prolate π h 1 1 / 2 ⊗ν g 7 / 2 configuration. A second band, with a small signature...
Gamma-ray production cross sections have been measured for the γ -ray lines which are most strongly excited in the proton bombardments of C, N, O, Mg, Al, Si, and Fe targets of natural isotopic composition. High resolution germanium detectors were used to collect γ -ray spectra at proton...
Alpha energy spectra and angular distribution have been measured for the reaction 120 MeV Si 30 + 30 Si and compared to statistical model calculations. Emission from spherical nuclei cannot account for the shapes of the measured spectra. Reductions are required in both emission barrier and...
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