1991 Vol. 15, No. 7
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Abstract:
Data production of BES offline analysis is described,filter criteria of events are presented,and the division of the DST data,the reconstructed events,is introduced.Some physics signals first seen in BES from preliminary analyzing are also shown in t...
Data production of BES offline analysis is described,filter criteria of events are presented,and the division of the DST data,the reconstructed events,is introduced.Some physics signals first seen in BES from preliminary analyzing are also shown in t...
Abstract:
The mass,width and branching ratios of the ηc meson are estimated in the framework of a potential model.It is shown that it is possible for the width of the forbidden M1 transition ηc→J/ψγ to raise one order of magnitude after considering relativisti...
The mass,width and branching ratios of the ηc meson are estimated in the framework of a potential model.It is shown that it is possible for the width of the forbidden M1 transition ηc→J/ψγ to raise one order of magnitude after considering relativisti...
Abstract:
It is shown that the topological term in the O(3) nonlinear σ-model can be removed by a suitable canonical transformation in the classical theory of the model.In this paper,the quantum unitary transformation corresponding to the classical canonical t...
It is shown that the topological term in the O(3) nonlinear σ-model can be removed by a suitable canonical transformation in the classical theory of the model.In this paper,the quantum unitary transformation corresponding to the classical canonical t...
Abstract:
The solvability of the wave-function in (1+1)-dimensional quantum gravity is studied by introducing a scalar matter field.Similar problems in two-dimensional supergravity model are also considered.
The solvability of the wave-function in (1+1)-dimensional quantum gravity is studied by introducing a scalar matter field.Similar problems in two-dimensional supergravity model are also considered.
Abstract:
In this paper,the effect of different secondary collision on the increase of the K+/π+ ratio in RHIC is analyzed based on a participant-spectator picture,using Monte Carlo simulation.Our results show that the increase of the K+/π+ ratio resulting fro...
In this paper,the effect of different secondary collision on the increase of the K+/π+ ratio in RHIC is analyzed based on a participant-spectator picture,using Monte Carlo simulation.Our results show that the increase of the K+/π+ ratio resulting fro...
Abstract:
Based on a careful analysis of the mechanism of high energy non-equal mass nuclei collisions,the multisource modle is further developed.The transverse energy distribution in central rapidity region at both CERN and BNL energy domains are calculated.T...
Based on a careful analysis of the mechanism of high energy non-equal mass nuclei collisions,the multisource modle is further developed.The transverse energy distribution in central rapidity region at both CERN and BNL energy domains are calculated.T...
Abstract:
The differential cross sections and the spin observables of p-12C elastic scattering in the whole intermediate energy region are calculated in the Glauber theory.The theoretical results show considerable deviations from the experimental data.
The differential cross sections and the spin observables of p-12C elastic scattering in the whole intermediate energy region are calculated in the Glauber theory.The theoretical results show considerable deviations from the experimental data.
Abstract:
The possibility of proton decay for neutron deficient nuclei far from β stability is predicted in the mass region with A<70.The prediction calculation was based on kelson-Garvey mass relation and the mass formula of isospin analog state.The predicted...
The possibility of proton decay for neutron deficient nuclei far from β stability is predicted in the mass region with A<70.The prediction calculation was based on kelson-Garvey mass relation and the mass formula of isospin analog state.The predicted...
Abstract:
A new description of the hexadecapole degree of freedom in the medium and heavy mass region in the framework of the Fermion Dynamical Symmetry Model (FDSM) is proposed.In this paper,the k-active case is discussed in detail,in which the pairing and mu...
A new description of the hexadecapole degree of freedom in the medium and heavy mass region in the framework of the Fermion Dynamical Symmetry Model (FDSM) is proposed.In this paper,the k-active case is discussed in detail,in which the pairing and mu...
Abstract:
Anomalous phenomena of the transition probabilities in 161Lu are investigated.The observed drastic increase in the magnitude of the B(M1)/B(E2) after band crossing is a result of nuclear shape change,both in the β deformation and in the γ deformation...
Anomalous phenomena of the transition probabilities in 161Lu are investigated.The observed drastic increase in the magnitude of the B(M1)/B(E2) after band crossing is a result of nuclear shape change,both in the β deformation and in the γ deformation...
Abstract:
The g-boson degree of freedom in the vibrational regions is discussed in term of the energies and the electromagnetic transitions.Several closed expressions for the rates of M1,E2 transitions and the E2,M1 mixing ratios are obtained.Some survey is ma...
The g-boson degree of freedom in the vibrational regions is discussed in term of the energies and the electromagnetic transitions.Several closed expressions for the rates of M1,E2 transitions and the E2,M1 mixing ratios are obtained.Some survey is ma...
Abstract:
Based on a large amount of experimental nformations,it is assumed that SQS avalanche is developed when the electric field around the anode wire is heavily distorted by the space charge accumulated in the primary avalanche.Following this assumption th...
Based on a large amount of experimental nformations,it is assumed that SQS avalanche is developed when the electric field around the anode wire is heavily distorted by the space charge accumulated in the primary avalanche.Following this assumption th...
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