dorsal/arxiv
View SchemaParticle-Production Mechanism in Relativistic Heavy-Ion Collisions
| Authors | Brian W. Bush, J. Rayford Nix |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9406034 |
| URL | https://arxiv.org/abs/nucl-th/9406034 |
Abstract
We discuss the production of particles in relativistic heavy-ion collisions through the mechanism of massive bremsstrahlung, in which massive mesons are emitted during rapid nucleon acceleration. This mechanism is described within the framework of classical hadrodynamics for extended nucleons, corresponding to nucleons of finite size interacting with massive meson fields. This new theory provides a natural covariant microscopic approach to relativistic heavy-ion collisions that includes automatically spacetime nonlocality and retardation, nonequilibrium phenomena, interactions among all nucleons, and particle production. Inclusion of the finite nucleon size cures the difficulties with preacceleration and runaway solutions that have plagued the classical theory of self-interacting point particles. For the soft reactions that dominate nucleon-nucleon collisions, a significant fraction of the incident center-of-mass energy is radiated through massive bremsstrahlung. In the present version of the theory, this radiated energy is in the form of neutral scalar ($\sigma$) and neutral vector ($\omega$) mesons, which subsequently decay primarily into pions with some photons also. Additional meson fields that are known to be important from nucleon-nucleon scattering experiments should be incorporated in the future, in which case the radiated energy would also contain isovector pseudoscalar ($\pi^+$, $\pi^-$, $\pi^0$), isovector scalar ($\delta^+$, $\delta^-$, $\delta^0$), isovector vector ($\rho^+$, $\rho^-$, $\rho^0$), and neutral pseudoscalar ($\eta$) mesons.
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"abstract": "We discuss the production of particles in relativistic heavy-ion collisions\nthrough the mechanism of massive bremsstrahlung, in which massive mesons are\nemitted during rapid nucleon acceleration. This mechanism is described within\nthe framework of classical hadrodynamics for extended nucleons, corresponding\nto nucleons of finite size interacting with massive meson fields. This new\ntheory provides a natural covariant microscopic approach to relativistic\nheavy-ion collisions that includes automatically spacetime nonlocality and\nretardation, nonequilibrium phenomena, interactions among all nucleons, and\nparticle production. Inclusion of the finite nucleon size cures the\ndifficulties with preacceleration and runaway solutions that have plagued the\nclassical theory of self-interacting point particles. For the soft reactions\nthat dominate nucleon-nucleon collisions, a significant fraction of the\nincident center-of-mass energy is radiated through massive bremsstrahlung. In\nthe present version of the theory, this radiated energy is in the form of\nneutral scalar ($\\sigma$) and neutral vector ($\\omega$) mesons, which\nsubsequently decay primarily into pions with some photons also. Additional\nmeson fields that are known to be important from nucleon-nucleon scattering\nexperiments should be incorporated in the future, in which case the radiated\nenergy would also contain isovector pseudoscalar ($\\pi^+$, $\\pi^-$, $\\pi^0$),\nisovector scalar ($\\delta^+$, $\\delta^-$, $\\delta^0$), isovector vector\n($\\rho^+$, $\\rho^-$, $\\rho^0$), and neutral pseudoscalar ($\\eta$) mesons.",
"arxiv_id": "nucl-th/9406034",
"authors": [
"Brian W. Bush",
"J. Rayford Nix"
],
"categories": [
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"title": "Particle-Production Mechanism in Relativistic Heavy-Ion Collisions",
"url": "https://arxiv.org/abs/nucl-th/9406034"
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