1997 Vol. 21, No. 11
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Abstract:
The mean multiplicities of mesons π±、π0、K±、K0s、ρ0.K*0、K*±、φ and baryons p、Ξ±、Σ±(1385) are measured for the first time in J/ψ region with 200,000 J/ψ events collected by the BES detector. The results are compatible with LUND and Shandong phenomenologi...
The mean multiplicities of mesons π±、π0、K±、K0s、ρ0.K*0、K*±、φ and baryons p、Ξ±、Σ±(1385) are measured for the first time in J/ψ region with 200,000 J/ψ events collected by the BES detector. The results are compatible with LUND and Shandong phenomenologi...
Abstract:
Both yrast and 4-quasiparticle bands in 162Lu are established by using in-beam spectroscopy. It is shown that within the framework of cranking shell model,positive deformation can also lead to the low-spin signature inversion in the yrast band in Z=7...
Both yrast and 4-quasiparticle bands in 162Lu are established by using in-beam spectroscopy. It is shown that within the framework of cranking shell model,positive deformation can also lead to the low-spin signature inversion in the yrast band in Z=7...
Abstract:
The in-beam γ expedmental setup of HIRFL, which includes SFC(ECR ion source), direct-link-pipe(limit jaws) and in-beam γmeasurement system, was adjusted and tested with its first in-beam γ experiment. All performances, such as neutron and γ backgroun...
The in-beam γ expedmental setup of HIRFL, which includes SFC(ECR ion source), direct-link-pipe(limit jaws) and in-beam γmeasurement system, was adjusted and tested with its first in-beam γ experiment. All performances, such as neutron and γ backgroun...
Abstract:
With data collected by the Beijing Spectmmeter (BES) in the J/ψ,ψ′, and Ds energy region, a lot of e+e- final state evenb are selected in the solid angle region covered by the endcap shower counters (ESC). Some characteristics of the ESC are analysed...
With data collected by the Beijing Spectmmeter (BES) in the J/ψ,ψ′, and Ds energy region, a lot of e+e- final state evenb are selected in the solid angle region covered by the endcap shower counters (ESC). Some characteristics of the ESC are analysed...
Abstract:
The angular dependence of the particle-Particle comeladon (PPC) and its asytiumeby (PPCA) have been calculated by using the experimental data of multiplicity production for pp collisions at 400GeV/ c. The results are different stmngly from the overal...
The angular dependence of the particle-Particle comeladon (PPC) and its asytiumeby (PPCA) have been calculated by using the experimental data of multiplicity production for pp collisions at 400GeV/ c. The results are different stmngly from the overal...
Abstract:
In this Paper, the Parameter ratio of (2+1)-D SU(2) 0++ glueball wavefunctionis calculated using scheme of truncating eigenvalus equations ,The result shows agood scaling behavior.
In this Paper, the Parameter ratio of (2+1)-D SU(2) 0++ glueball wavefunctionis calculated using scheme of truncating eigenvalus equations ,The result shows agood scaling behavior.
Abstract:
Two two-parameter deformed multi-mode boss operators which satisfy quantum Heisenberg-Weyl algebra are consbucted, and their algebraic structure. studied. As examples, the Holstein-Primokoff realizations for multi-node quantum. group SU(2)q,s. and SU...
Two two-parameter deformed multi-mode boss operators which satisfy quantum Heisenberg-Weyl algebra are consbucted, and their algebraic structure. studied. As examples, the Holstein-Primokoff realizations for multi-node quantum. group SU(2)q,s. and SU...
Abstract:
We invesdgate the correction to the branching ratio of decay b→sγ from the Pseudo-Goldstone bosons (PGBs) in the multiscale walking technicolor model (MWTCM). Tbe correction is found so large that we can not explain the recentCLEO data lf topcolor is...
We invesdgate the correction to the branching ratio of decay b→sγ from the Pseudo-Goldstone bosons (PGBs) in the multiscale walking technicolor model (MWTCM). Tbe correction is found so large that we can not explain the recentCLEO data lf topcolor is...
Abstract:
Using the Debye screening in QGP, the disbibudon function and the color electric potential of the quarks at high temperature, the radiated power of the rest color electric wave of the quarks in QGP are obtained. The relation between the radiated powe...
Using the Debye screening in QGP, the disbibudon function and the color electric potential of the quarks at high temperature, the radiated power of the rest color electric wave of the quarks in QGP are obtained. The relation between the radiated powe...
Abstract:
Under different impact parameters, the collision system of 30MeV/u 40Ca+40Ca is investigated in terms of QltllD model. It is .shown that the number of IMFs is the largest at impact pararneter b=6fm, which is due to the formation of "neck" in collisio...
Under different impact parameters, the collision system of 30MeV/u 40Ca+40Ca is investigated in terms of QltllD model. It is .shown that the number of IMFs is the largest at impact pararneter b=6fm, which is due to the formation of "neck" in collisio...
Abstract:
The ground state correlation in model systems with different interaction strength and pardcle numbers has been studied. Nunnerical results tell us that if the ground state shape is quite stable, the ground state correlation can be approximately expla...
The ground state correlation in model systems with different interaction strength and pardcle numbers has been studied. Nunnerical results tell us that if the ground state shape is quite stable, the ground state correlation can be approximately expla...
Abstract:
The inverse of the q-analogue boson creation and annihilation operators is introduced. By vimue of the properties of aq-1and aq+-1the q-analogue defomadon form of the Photostatted coherent states is constructed and its completeness relation is discus...
The inverse of the q-analogue boson creation and annihilation operators is introduced. By vimue of the properties of aq-1and aq+-1the q-analogue defomadon form of the Photostatted coherent states is constructed and its completeness relation is discus...
Abstract:
Using the relativistic harmonic oscillator model, the helicity amplitudes of resonances are studied and the relativistic effect is addressed.
Using the relativistic harmonic oscillator model, the helicity amplitudes of resonances are studied and the relativistic effect is addressed.
Abstract:
The particle-rotor model is applied to describe the odd A superdeformed nuclear states in A~150 mass region. The calculated ΔI=2 Staggering in superdeformed bands in 149Gd(bl) and 153Dy(bl) is compared with the observed data for the first time.
The particle-rotor model is applied to describe the odd A superdeformed nuclear states in A~150 mass region. The calculated ΔI=2 Staggering in superdeformed bands in 149Gd(bl) and 153Dy(bl) is compared with the observed data for the first time.
Abstract:
In proton linacs the pardcle beams are often focused by isochronic periodic fields, in which the lengths of periods are different but the times the particles travel through each period are constant. In this paper the basic theory of focusing by isoch...
In proton linacs the pardcle beams are often focused by isochronic periodic fields, in which the lengths of periods are different but the times the particles travel through each period are constant. In this paper the basic theory of focusing by isoch...
Abstract:
Small strips of amorphous alloys Fe77.2Mn0.8Si9B13, Fe39Ni39V2Si12B8,Fe47Ni29V2Si6B16and Fe40Ni40Si12B8 have been irradiated with 2.79MeV/u Ar ions below 50K Using optical microscopy, the macroscopic. dimensions of the samples were measured at roomte...
Small strips of amorphous alloys Fe77.2Mn0.8Si9B13, Fe39Ni39V2Si12B8,Fe47Ni29V2Si6B16and Fe40Ni40Si12B8 have been irradiated with 2.79MeV/u Ar ions below 50K Using optical microscopy, the macroscopic. dimensions of the samples were measured at roomte...
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