Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Isoscalar"”.
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First observation of the Pygmy Dipole Resonance in the nucleus 68Ni using an isoscalar probe above the neutron emission threshold
… tale modo possa essere popolato usando sonde sia isoscalari che isovettoriali. Infatti, diversi esperimenti sono stati realizzati, al di sotto della soglia di emissione neutronica, impiegando entrambe le sonde. Il confronto tra tali esperimenti mostra come solo una regione, a bassa energia, della …
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An analysis of K⁺-nucleon scattering
… and energy-independent solutions for the isoscalar and isovector amplitudes are generated by fitting data with a chi-squared minimization technique. The isoscalar amplitudes extend to a K⁺ incident lab kinetic energy of 1100 MeV; the isovector amplitudes extend to 2650 MeV. Due to the lack …
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Effective interactions and pairing correlations: from nuclei to compact stars
… of neutron-rich nuclei, focusing on the mixed isoscalar-isovector character of their collective excitations. In particular, we address some of the open questions concerning the nature of the low-lying isovector dipole strength experimentally observed in neutron-rich nuclei and known in …
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Giant resonances in lead-208 measured by electron scattering with coincident neutrons
… 9.0 MeV to 12.5 MeV exhausts (107~32)% of an isoscalar E2 energy weighted sum rule, and the measured strength in the region from 12.5 MeV to 16.0 MeV exhausts (94~28)% of an isoscalar EO energy weighted sum rule.
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Search For Contact Interactions Using The Dimuon Mass Spectrum In P-P Collisions At Sqrt(s) = 8 Tev At Cms
… interactions in the context of the left-left isoscalar model with compositeness energy scale shows no signicant deviation from the standard model predictions. Exclusion lower limits are placed on Lambda of 14.8 TeV and 12.4 TeV at a 95 % condence level for constructive and destructive …
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The Measurement of Neutrino Induced Quasi-Elastic Cross Section In NOMAD
… cross section and its axial-mass off an isoscalar target in the NOMAD detector. The incident neutrino energy in NOMAD experiment spans from 2.5 to 300 GeV. The measurement of cross-section is conducted in two seperate kinematic-based topology, two-track and one-track topologies, where a …
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Forward to backward asymmetry of the photoneutron cross sections of calcium and lead in the energy region of the isovector electric quadrupole resonance
… of a series of Breit-Wigner resonances for the Isoscalar and Isovector E2 and the Giant Dipole Resonance, can be fitted to the data. It yields a width for the IVQR of ~ 23 MeV centered around 29.5 ± 1.5 MeV. The IVQR strength is found to be between 20% and 50% of a sumrule. The IVQR is fairly …
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Deuteron compton scattering below pion threshold
A series of experiments were performed at the Tagged Photon Facility at MAX-lab in Lund, Sweden to study photon scattering from the deuteron and extract the neutron polarizabilities. The deuteron Compton scattering cross section was measured at laboratory angles of $60^o$, $120^o$, and $150^o$ for …