Theoretical investigation of subthreshold kaon production in heavy-ion collisions based on the relativistic transport model /
The relativistic transport model, in which the nucleon effective mass is related to a scalar field while its energy is shifted by a vector potential, is extended to include the kaon degree of freedom. The medium modification of the kaon mass due to the explicit chiral symmetry breaking is taken int...
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| Format: | Thesis Book |
| Language: | English |
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[Place of publication not identified] :
[publisher not identified] ;
1994.
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| Online Access: | http://proxy.library.tamu.edu/login?url=http://proquest.umi.com/pqdweb?did=741965121&sid=1&Fmt=2&clientId=2945&RQT=309&VName=PQD |
| Summary: | The relativistic transport model, in which the nucleon effective mass is related to a scalar field while its energy is shifted by a vector potential, is extended to include the kaon degree of freedom. The medium modification of the kaon mass due to the explicit chiral symmetry breaking is taken into account; both the propagation of kaons in the mean-field potential and the kaon-baryon elastic scattering are treated explicitly. The investigation shows that the attractive kaon scajar mean-field potential in dense nuclear matter leads to enhanced kaon yield in heavy-ion collisions at incident energies about 1 GeV/nucleon, which are below the threshold for kaon production from the nucleon-nucleon interaction in free space. It also shows that the final-state kaon-baryon scattering affects significantly the kaon momentum spectra, resulting in increased yield of kaons having large momenta or emitted at large laboratory angles. With a soft nuclear equation of state used and the attractive kaon scalar potential included, the calculated kaon energy spectra are found in good agreement with the data on subthreshold kaon production from the heavy-ion synchrotron at GSI. |
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| Item Description: | Vita. "Major Subject: Physics". |
| Physical Description: | vii, 98 leaves : illustrations ; 28 cm. Issued also on microfiche from University Microfilms Inc. |
| Bibliography: | Includes bibliographical references. |