Monte Carlo Simulation of Multiple Production in Proton-Antiproton Collisions at CERN SPS Collider : Particles and Fields
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概要
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We propose a simple model for Monte Carlo simulation of multiple production in hadron-hadron collisions at high energies. The leading particle spectrum, the single particle transverse momentum distribution and the multiplicity distribution for full phase space are taken from experiment as the inputs. The longitudinal momenta of hadrons or clusters in the central component are generated by a random cut procedure. The conversation of energy and longitudinal momentum is imposed rigorously. The model thus makes it possible to study the origin of various fluctuations and correlations in the longitudinal phase space independent of how to explain the distributions used as the inputs. A Monte Carlo event generator is constructed using this model and it is applied to proton-antiproton collisions at center-of-mass energy √<s>=540 GeV in order to analyze the data on the so-called minimum bias events measured at CERN SPS collider. Emphasis is laid on how to reproduce the observed charged multiplicity distributions in different intervals of pseudorapidity. It is found that the clustering of ordinary size is sufficient to explain the observed suppression of the fluctuations of the local multiplicity distributions. Single particle inclusive spectra, semi-inclusive ones and forward-backward multiplicity correlations are calculated and compared with experiment.
- 理論物理学刊行会の論文
- 1987-02-25
著者
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TAKAGI Fujio
Department of Physics, Tohoku University
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Takagi Fujio
Department Of Basic Sciences Ishinomaki Senshu University
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TAKAGI Fujio
Physics Department, Tohoku University
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