1992 Vol. 16, No. 1
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Abstract:
The L3 calorimeter beam test data were analyzed.An e/π separation scheme including "key cut" and "Δ cut" is suggested.We show that,using the scheme,in the energy range 4—20GeV,e/π separation is better than 93.7%.
The L3 calorimeter beam test data were analyzed.An e/π separation scheme including "key cut" and "Δ cut" is suggested.We show that,using the scheme,in the energy range 4—20GeV,e/π separation is better than 93.7%.
Abstract:
When an ion beam pass through the Penning trap an electron cloud is produced.The distributions of the electron density,electron temperature,drift angular velocity of electrons,diffusion flow density of electrons and electric potential in the electron...
When an ion beam pass through the Penning trap an electron cloud is produced.The distributions of the electron density,electron temperature,drift angular velocity of electrons,diffusion flow density of electrons and electric potential in the electron...
Abstract:
The three family fermions can not be accommolated the Grand Unified Theories(GUTs)if only one extra Z0 boson exists.The minimal GUTs with three families should include two extra Z0 bosons which belong to the different broken scales.Georg's argument o...
The three family fermions can not be accommolated the Grand Unified Theories(GUTs)if only one extra Z0 boson exists.The minimal GUTs with three families should include two extra Z0 bosons which belong to the different broken scales.Georg's argument o...
Abstract:
In high energy reactions the production of Spin 3/2 baryons is strongly suppressed in comparison with that of 1/2 baryons.We show that it results from the flavor conservation,so that the strangeness suppression factor λ=/ completely determines the ra...
In high energy reactions the production of Spin 3/2 baryons is strongly suppressed in comparison with that of 1/2 baryons.We show that it results from the flavor conservation,so that the strangeness suppression factor λ=
Abstract:
Chiral Ward-Takahashi identities with composite fields are applied to investigate mass spectra in (2+1) dimensional chiral Gross-Neveu model.The fermion mass and bound state spectra are obtained,which are in agreement with large-N expansion in the lo...
Chiral Ward-Takahashi identities with composite fields are applied to investigate mass spectra in (2+1) dimensional chiral Gross-Neveu model.The fermion mass and bound state spectra are obtained,which are in agreement with large-N expansion in the lo...
Abstract:
The increase of the width of the momentum distribution of He fragments with decreasing He-multiplicity in relativistic 16O fragmentation at 2GeV/N to 200GeV/N is analyzed.The result shows that with decreasing He-multiplicity the surface-excitation en...
The increase of the width of the momentum distribution of He fragments with decreasing He-multiplicity in relativistic 16O fragmentation at 2GeV/N to 200GeV/N is analyzed.The result shows that with decreasing He-multiplicity the surface-excitation en...
Abstract:
The enhancement of K+/π+ ratio in the high energy heavy-ion collision is believed to be a possible signature of the quark gluon plasma.Based on the Participant Nucleon Model and the concept of the formation time of secondary particles,the K+/π+ ratio...
The enhancement of K+/π+ ratio in the high energy heavy-ion collision is believed to be a possible signature of the quark gluon plasma.Based on the Participant Nucleon Model and the concept of the formation time of secondary particles,the K+/π+ ratio...
Abstract:
We discuss the time evolution of the colour screening and J/ψ、χ and ψ' suppression by the quark-gluon plasma within the non-relativistic confining potential model.
We discuss the time evolution of the colour screening and J/ψ、χ and ψ' suppression by the quark-gluon plasma within the non-relativistic confining potential model.
Abstract:
The cross sections for the 50Ti(n,α)47Ca,46Ti(n,p)46Sc、48Ti(n,p)48Sc and 58Ni(n,2n)57Ni 58Ni(n,p)58m+gCo reactions have been measured by using the activation method relative to the cross sections of the 27Al(n,α)24Na reaction in the neutron energy ra...
The cross sections for the 50Ti(n,α)47Ca,46Ti(n,p)46Sc、48Ti(n,p)48Sc and 58Ni(n,2n)57Ni 58Ni(n,p)58m+gCo reactions have been measured by using the activation method relative to the cross sections of the 27Al(n,α)24Na reaction in the neutron energy ra...
Abstract:
The high spin states of 125Ba populated via the 109Ag(19F,3n) reaction are measured by using a BGO Compton suppressed HPGe detector array.The negative and positive parity bands built respectively on the h11/2 and g7/2 neutron hole states are extended...
The high spin states of 125Ba populated via the 109Ag(19F,3n) reaction are measured by using a BGO Compton suppressed HPGe detector array.The negative and positive parity bands built respectively on the h11/2 and g7/2 neutron hole states are extended...
Abstract:
In order to describe the quasi-elastic knockout reactions such as (p,2p) by a method with higher accuracy,the multiple-scattering proposed by the previous work has been developed in this paper based on the time-independent multiple-scattering theory....
In order to describe the quasi-elastic knockout reactions such as (p,2p) by a method with higher accuracy,the multiple-scattering proposed by the previous work has been developed in this paper based on the time-independent multiple-scattering theory....
Abstract:
By the Holstein-Primakoff boson expansion,an hermitian supplementary term with finite form is introduced into the IBM hamiltonian to describe the cross shell excitations.The method of intrinsic condensate is generalized to treat the intruder states.A...
By the Holstein-Primakoff boson expansion,an hermitian supplementary term with finite form is introduced into the IBM hamiltonian to describe the cross shell excitations.The method of intrinsic condensate is generalized to treat the intruder states.A...
Abstract:
A formula for the calculation of the cross sections,of nuclear transition to continuum states induced by direct radiative capture of intermediate-energy proton is deduced.The transition amplitude includes two terms corresponding to potential-scatteri...
A formula for the calculation of the cross sections,of nuclear transition to continuum states induced by direct radiative capture of intermediate-energy proton is deduced.The transition amplitude includes two terms corresponding to potential-scatteri...
Abstract:
The validity of the quantum group SUq(2) expression for the nuclear rotational spectrum is investigated thoroughly.Analyses (including the Mallmann plots,the relations for the I(I+1) expansion coefficients,energy spectra,etc.)definitely display a sys...
The validity of the quantum group SUq(2) expression for the nuclear rotational spectrum is investigated thoroughly.Analyses (including the Mallmann plots,the relations for the I(I+1) expansion coefficients,energy spectra,etc.)definitely display a sys...
IF: 3.6
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ISSN 1674-1137 CN 11-5641/O4
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