1991 Vol. 15, No. 5
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Abstract:
The method of determining the bunch length of collider by the vertex of charged particles which came from J/ψ decay is discussed.The bunch length of Beijing Electron Positron Collider at colliding region is presented.
The method of determining the bunch length of collider by the vertex of charged particles which came from J/ψ decay is discussed.The bunch length of Beijing Electron Positron Collider at colliding region is presented.
Abstract:
The PARMELA code is modified for three-dimensional dynamic calculation of the injector of a L-band travelling wave electron linac for FEL research.Various parameters in relation to characteristics of the beam are given in the paper.
The PARMELA code is modified for three-dimensional dynamic calculation of the injector of a L-band travelling wave electron linac for FEL research.Various parameters in relation to characteristics of the beam are given in the paper.
Abstract:
The dynamics of condensate formation is investigated in the nontopological soliton model,and the critical coupling constant gcrit and critical charge number of nucleus Zcrit are obtained.Many salient features of the narrow e+e－ peaks can be understoo...
The dynamics of condensate formation is investigated in the nontopological soliton model,and the critical coupling constant gcrit and critical charge number of nucleus Zcrit are obtained.Many salient features of the narrow e+e－ peaks can be understoo...
Abstract:
Constraints to grand unified preon models from recent LEP data on light neutrino species Nv are analyzed.Because the precise experimental result prsult prefers Nv=3,the possible grand unified preon models are grand unified preon models with confining...
Constraints to grand unified preon models from recent LEP data on light neutrino species Nv are analyzed.Because the precise experimental result prsult prefers Nv=3,the possible grand unified preon models are grand unified preon models with confining...
Abstract:
The free energy on high genus Riemann surface has been calculated by using the world sheet soliton action.This soliton-like action is corresponding to the bosonic string coupled to the two-dimensional scalar field.
The free energy on high genus Riemann surface has been calculated by using the world sheet soliton action.This soliton-like action is corresponding to the bosonic string coupled to the two-dimensional scalar field.
Abstract:
The radial wave function equation of bosons in higher dimensional Kerr metric is obtained with the separation of variables.The boson bound states around higher dimensional Kerr black hole are discussed.It is found the boson bound states do not exist ...
The radial wave function equation of bosons in higher dimensional Kerr metric is obtained with the separation of variables.The boson bound states around higher dimensional Kerr black hole are discussed.It is found the boson bound states do not exist ...
Abstract:
The effective potential of the W-S model is calculated at finite temperature and Jensity from the entire Lagrangian according to the grand canonical ensemble temperature field theory.The two elementary thermal effects is the weak and electromagnetic ...
The effective potential of the W-S model is calculated at finite temperature and Jensity from the entire Lagrangian according to the grand canonical ensemble temperature field theory.The two elementary thermal effects is the weak and electromagnetic ...
Abstract:
The One-body structure and the internal oscillation mode of the hypernucleus 9Be at low-lying states have been determined by calculating the one-body density and the curves of r(R) at the conditional maximum of the shape density ρs.
The One-body structure and the internal oscillation mode of the hypernucleus 9Be at low-lying states have been determined by calculating the one-body density and the curves of r(R) at the conditional maximum of the shape density ρs.
Abstract:
This report describes the general situations of the experimental terminal of large area ionization chamber which the HIRFL accelerator in Lanzhou.The basic structure of the terminal and detector systems is introduced.Some measurement results of the d...
This report describes the general situations of the experimental terminal of large area ionization chamber which the HIRFL accelerator in Lanzhou.The basic structure of the terminal and detector systems is introduced.Some measurement results of the d...
Abstract:
The evolution of strangeness in an expanding quark-gluon plasma formed by ultrarelativistic nucleus-nucleus collisions was studied by solving relaxation equations.In the calculation,the 3-dimensional expansion effect of the system was described by re...
The evolution of strangeness in an expanding quark-gluon plasma formed by ultrarelativistic nucleus-nucleus collisions was studied by solving relaxation equations.In the calculation,the 3-dimensional expansion effect of the system was described by re...
Abstract:
With a Skyrme force the Momentum and density dependent mean field was calculated.The effects on the collective flow produced from heavy ion collision with and without the momentum dependent potential were discussed in the framework of BUU theory.
With a Skyrme force the Momentum and density dependent mean field was calculated.The effects on the collective flow produced from heavy ion collision with and without the momentum dependent potential were discussed in the framework of BUU theory.
Abstract:
By proton-neutron BCS method with very few parameters,Hexadecapole moments (Q40) and quadrapole moments (Q20) are calculated for even-even nuclei in the whole rare earth region.Some of the results are in good agreement with expriments.The comparison ...
By proton-neutron BCS method with very few parameters,Hexadecapole moments (Q40) and quadrapole moments (Q20) are calculated for even-even nuclei in the whole rare earth region.Some of the results are in good agreement with expriments.The comparison ...
Abstract:
Missing points in previous literature about strong CP are remarked.Emphasis is put on vacuum alignment with heavy quark taking into account.After obtaining the master equations of vacuum alignment,we point out that mCd=0 is the sufficient and necessa...
Missing points in previous literature about strong CP are remarked.Emphasis is put on vacuum alignment with heavy quark taking into account.After obtaining the master equations of vacuum alignment,we point out that mCd=0 is the sufficient and necessa...
Abstract:
The giueball interpretation of the ξ(2230) is discussed when the gluon has only the transverse components.
The giueball interpretation of the ξ(2230) is discussed when the gluon has only the transverse components.
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