1994 Vol. 18, No. 9
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Abstract:
An artificial neural network was built to select events in the τ→ρVτ polarization analysis at LEP/L3, much better selection efficiency has been achieved.Detailed studies show that no systematic errors or bias have been introduced by the application o...
An artificial neural network was built to select events in the τ→ρVτ polarization analysis at LEP/L3, much better selection efficiency has been achieved.Detailed studies show that no systematic errors or bias have been introduced by the application o...
Abstract:
The charged multiplicity distributions of hadron final states in the e+e－ annihilation at the 91.2 GeV Z0 energy region are fitted with Poisson shape in different rapidity windows for double and single hemisphere. The multiplicities which are in Pois...
The charged multiplicity distributions of hadron final states in the e+e－ annihilation at the 91.2 GeV Z0 energy region are fitted with Poisson shape in different rapidity windows for double and single hemisphere. The multiplicities which are in Pois...
Abstract:
The possibility for monitoring TeV cosmic ray flux with China-Japan joint Tibet Air Shower Array (ASA) is discussed. The meteorological influences on trigger rate of ASA are analysed. A correction method for these effects is found and is adopted in t...
The possibility for monitoring TeV cosmic ray flux with China-Japan joint Tibet Air Shower Array (ASA) is discussed. The meteorological influences on trigger rate of ASA are analysed. A correction method for these effects is found and is adopted in t...
Abstract:
The sign-flip probability of the impact parameter in the measurement of the tau lifetime is studied. The probability of the impact parameter with the negative value is introduced into the formula to fit the tau lifetime in the L3 experiment.The syste...
The sign-flip probability of the impact parameter in the measurement of the tau lifetime is studied. The probability of the impact parameter with the negative value is introduced into the formula to fit the tau lifetime in the L3 experiment.The syste...
Abstract:
The collective matter flow in the 64Zn-27Al reaction at 57MeV/u is measured in terms of a 4πcharged particle array. The events as a function of the impact parameter are sorted by using the average parallel velocity method. The reaction plane is deter...
The collective matter flow in the 64Zn-27Al reaction at 57MeV/u is measured in terms of a 4πcharged particle array. The events as a function of the impact parameter are sorted by using the average parallel velocity method. The reaction plane is deter...
Abstract:
We use a simple decay model of low excited baryon states to evaluate the decay contributions of these states to the (1/2)+ and (3/2)+ baryons. we further input the experiment values R1=(1530)/Ξ, R2=∑(1385 )/∑and R3=∧(1520)/∑(1385)at γ on c.m. energy ...
We use a simple decay model of low excited baryon states to evaluate the decay contributions of these states to the (1/2)+ and (3/2)+ baryons. we further input the experiment values R1=(1530)/Ξ, R2=∑(1385 )/∑and R3=∧(1520)/∑(1385)at γ on c.m. energy ...
Abstract:
The weight function Sk of Baxter-Bazhanov model is discussed in detail and a complete proof of the three-dimensional star-star relation is obtained.
The weight function Sk of Baxter-Bazhanov model is discussed in detail and a complete proof of the three-dimensional star-star relation is obtained.
Abstract:
The dimensional regularization approach in the operator representation of the Dirac algebra defined in the extended Grassmann space is applied to investigate the properties of the π-meson mode in the Nambu-Jona-Lasinio model. It is shown that the ana...
The dimensional regularization approach in the operator representation of the Dirac algebra defined in the extended Grassmann space is applied to investigate the properties of the π-meson mode in the Nambu-Jona-Lasinio model. It is shown that the ana...
Abstract:
The changed particle multiplicity of heavy quark jet events in e+e－ annihilation is calculated by the quark production rule and quark combination rule. The results agree well with experiments. The comparison of the charged particle multiplicities wit...
The changed particle multiplicity of heavy quark jet events in e+e－ annihilation is calculated by the quark production rule and quark combination rule. The results agree well with experiments. The comparison of the charged particle multiplicities wit...
Abstract:
We have discussed the nonleptonic decay of charmless b-flavored baryons in the previous article. By using US(3)f flavor symmetry, the semileptonic decays of bottom baryons are further studied. Some decay rates and relations are obtained.We hope that ...
We have discussed the nonleptonic decay of charmless b-flavored baryons in the previous article. By using US(3)f flavor symmetry, the semileptonic decays of bottom baryons are further studied. Some decay rates and relations are obtained.We hope that ...
Abstract:
The relationship between the energy storage and the entrance channel dynamics (i.e. incident energy, impact parameter and collision system) is studied by using the BUU model. The effects of the entrance channel mass asymmetries on theexcitation energ...
The relationship between the energy storage and the entrance channel dynamics (i.e. incident energy, impact parameter and collision system) is studied by using the BUU model. The effects of the entrance channel mass asymmetries on theexcitation energ...
Abstract:
Preequilibrium neutron emissions from nucleus-nucleus collisions 36Ar+108Ag (35MeV/u) and 14N+108Ag (35MeV/u) are simulated in the BUU model. Thesimulations are in agreement with the intermediate rapidity source (IRS) parts in the moving source fit a...
Preequilibrium neutron emissions from nucleus-nucleus collisions 36Ar+108Ag (35MeV/u) and 14N+108Ag (35MeV/u) are simulated in the BUU model. Thesimulations are in agreement with the intermediate rapidity source (IRS) parts in the moving source fit a...
Abstract:
The interaction terms of the isospin-dependent symmetric energy and Coulomb energy are considered in the quantum molecular dynamics. The effects of thesymmetric energy on the mass distribution and cluster formation in the head oncollisions of the sys...
The interaction terms of the isospin-dependent symmetric energy and Coulomb energy are considered in the quantum molecular dynamics. The effects of thesymmetric energy on the mass distribution and cluster formation in the head oncollisions of the sys...
Abstract:
In order to investigate the intermittency behaviour in high energy collisions using the Levy stability theory, it is necessary to develop a method for the analytical calculation of Levy exponent. In view of this, the random cascading αmodel is refine...
In order to investigate the intermittency behaviour in high energy collisions using the Levy stability theory, it is necessary to develop a method for the analytical calculation of Levy exponent. In view of this, the random cascading αmodel is refine...
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