(Intermediate/high energy probes and the structure of nuclei): Final report
We propose to expand our efforts to develop a theoretical framework for the quark and gluon structure of nuclei. We will continue to refine the ingredients of our current model, the quark cluster model (QCM), and initiate an ambitious program in the non-perturbative solution of field theories. We propose to first solve non-trivial model field theories in the strong coupling regime using the discretized light front quantization (DLFQ) scheme of Pauli and Brodsky. The goal of these initial efforts will be to develop fast and accurate methods for taking the continuum limit as well as to elucidate the consequences of spontaneous symmetry breaking within the DLFQ method. Subsequent efforts will address QCD in low dimensionality with the purpose of extracting non-perturbative predictions for quark and gluon amplitudes in few baryon systems. Simultaneously with this new initiative we will continue to develop extensions and applications of the QCM. We propose to continue predicting phenomena to be observed in high energy particle-nucleus collisions that reflect the rearrangement of quarks and gluons in nuclei. We will analyze the data from the SLAC NE3 experiment to discover whether they confirm the QCM prediction of ''steps'' in the ratio of nuclear structure functions when Bjorken x exceeds unity. In another effort, we will perform a search for narrow resonances in electron-positron interactions high in the continuum using the Bethe-Salpeter equation. These resonances are speculated to account for the positron peaks seen in the GSI heavy-ion experiments. We will also complete our development of microscopic effective Hamiltonians for nuclei structure which include the explicit treatment of delta resonances. These effective Hamiltonians will be used in constrained mean field calculations to evaluate conditions for nuclei to undergo a transition from nucleon matter to delta matter. 61 refs.
- Research Organization:
- Iowa State Univ. of Science and Technology, Ames (USA)
- DOE Contract Number:
- AC02-82ER40068
- OSTI ID:
- 6212415
- Report Number(s):
- DOE/ER/40068-3; ON: DE87010248
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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SYMMETRY BREAKING
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LEPTON-LEPTON INTERACTIONS
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