dorsal/arxiv
View SchemaHadrons in Dense Matter
| Authors | Tetsuo Hatsuda |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9702002 |
| URL | https://arxiv.org/abs/nucl-th/9702002 |
Abstract
Physical reason behind the mass-shift of vector mesons ($\rho$, $\omega$, $\phi$) in nuclear matter is discussed in the Walecka model and in QCD sum rules. Using analytic formulas for the mass-shift valid at low densities, it is shown that the energy dependent part of the sels-energy (wave function renomalization) in medium is a main source for the negative mass-shift, while the energy independent part (the plasma frequency) has relatively a small effect. Future experiments in GSI ($\pi^- + A \to X + \omega$ ) and KEK-PS ($p + A \to X + \phi$ ) to detect the twin peak structure of vector mesons in $e^+e^-$ spectrum are reviewed. Also, it is proposed a new possible experiment using a $S (strangeness) = 1$ vector meson $K^{*}(892)$ with its radiative decay $K^{*+}(892) \to K^+ + \gamma$.
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"abstract": "Physical reason behind the mass-shift of vector mesons ($\\rho$, $\\omega$,\n$\\phi$) in nuclear matter is discussed in the Walecka model and in QCD sum\nrules. Using analytic formulas for the mass-shift valid at low densities, it is\nshown that the energy dependent part of the sels-energy (wave function\nrenomalization) in medium is a main source for the negative mass-shift, while\nthe energy independent part (the plasma frequency) has relatively a small\neffect. Future experiments in GSI ($\\pi^- + A \\to X + \\omega$ ) and KEK-PS ($p\n+ A \\to X + \\phi$ ) to detect the twin peak structure of vector mesons in\n$e^+e^-$ spectrum are reviewed. Also, it is proposed a new possible experiment\nusing a $S (strangeness) = 1$ vector meson $K^{*}(892)$ with its radiative\ndecay $K^{*+}(892) \\to K^+ + \\gamma$.",
"arxiv_id": "nucl-th/9702002",
"authors": [
"Tetsuo Hatsuda"
],
"categories": [
"nucl-th",
"hep-ph"
],
"title": "Hadrons in Dense Matter",
"url": "https://arxiv.org/abs/nucl-th/9702002"
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