1993 Vol. 17, No. 11
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Abstract:
The formalism and technique of the moment method for spin analysis of the boson X in J/ψ→γX,X→P1P2 are presented.The analysis technique is cited to study the spin of θ(1720) with Monte Carlo data samples.One finds that the spin of the boson X can be ...
The formalism and technique of the moment method for spin analysis of the boson X in J/ψ→γX,X→P1P2 are presented.The analysis technique is cited to study the spin of θ(1720) with Monte Carlo data samples.One finds that the spin of the boson X can be ...
Abstract:
The GdBa2(Cu1－xFex)3O7—δ system with x=0.005－0.001 and various oxygen concentrations was investigated by 57Fe-Mossbauer spectroscopy in temperature range 20K to 300K.The spectra of the orthorhombic phase were analyzed with four quadrupole doublets.Th...
The GdBa2(Cu1－xFex)3O7—δ system with x=0.005－0.001 and various oxygen concentrations was investigated by 57Fe-Mossbauer spectroscopy in temperature range 20K to 300K.The spectra of the orthorhombic phase were analyzed with four quadrupole doublets.Th...
Abstract:
Angular distributions of projectile fragments P,Si,Al and Mg produced in collisions of 200A GeV 32S beam with Cu are measured.The range of σpt deduced is within 130—270MeV/c.
Angular distributions of projectile fragments P,Si,Al and Mg produced in collisions of 200A GeV 32S beam with Cu are measured.The range of σpt deduced is within 130—270MeV/c.
Abstract:
The cross section is measured for 65 target residues produced from the interaction of indium with 42MeV/nucleon 12C ions using nuclear chemistry techniques.The experimental mass yield distribution gives a satisfactory agreement with that calculated f...
The cross section is measured for 65 target residues produced from the interaction of indium with 42MeV/nucleon 12C ions using nuclear chemistry techniques.The experimental mass yield distribution gives a satisfactory agreement with that calculated f...
Abstract:
Activities of 183Os were produced by 39MeV α particles bombarding on a natural tungsten target.β+ spectrum with coincidence gate set on the strongest 382keV γ-rays of 183Os decay was measured.The endpoint energy of the β+ spectrum was determined and ...
Activities of 183Os were produced by 39MeV α particles bombarding on a natural tungsten target.β+ spectrum with coincidence gate set on the strongest 382keV γ-rays of 183Os decay was measured.The endpoint energy of the β+ spectrum was determined and ...
Abstract:
The angular distribution for the process J/ψ→V1+X,X→γ+V2,V2→2P or 3P(where V1 and V2 stand for the vector mesons,P is the pseudoscalar meson) are presented.They can be used to distinguish the spin of the boson resonance X and determine the space pari...
The angular distribution for the process J/ψ→V1+X,X→γ+V2,V2→2P or 3P(where V1 and V2 stand for the vector mesons,P is the pseudoscalar meson) are presented.They can be used to distinguish the spin of the boson resonance X and determine the space pari...
Abstract:
With the aid of imaginary time temperature field theory and fermion mass spectrum derived from Ward-Takahashi identities with composite fields,the vertex correction among fermions and σ meson is calculated beyond the leading order in 1/N expansion,an...
With the aid of imaginary time temperature field theory and fermion mass spectrum derived from Ward-Takahashi identities with composite fields,the vertex correction among fermions and σ meson is calculated beyond the leading order in 1/N expansion,an...
Abstract:
The interaction vertices of the couplings of technivector mesons to the pseudoscalar mesons are derived from effective Lagrangian.We discuss all possible decay modes of neutral vector mesons and compute various decay factors.
The interaction vertices of the couplings of technivector mesons to the pseudoscalar mesons are derived from effective Lagrangian.We discuss all possible decay modes of neutral vector mesons and compute various decay factors.
Abstract:
We used the variational method in lattice gauge theory to calculate the chiral order parameter 〈ψψ〉 in the Schwinger model with Wilson fermions.
We used the variational method in lattice gauge theory to calculate the chiral order parameter 〈ψψ〉 in the Schwinger model with Wilson fermions.
Abstract:
In this paper,the existence of bound state solution to Klein-Gordon and Dirac equations under the JBD Straight Cosmic String background is investigated.We prove the existence of such bound states,and point out that the number of which might be infini...
In this paper,the existence of bound state solution to Klein-Gordon and Dirac equations under the JBD Straight Cosmic String background is investigated.We prove the existence of such bound states,and point out that the number of which might be infini...
Abstract:
The heavy-quarkonium nuclear bound states are recalculated by solving the Klein-Gordon equations.We find that the ηc(2980) can be bound in the nucleus.But the binding energies are in general quite different from that found by Brodsky et al.
The heavy-quarkonium nuclear bound states are recalculated by solving the Klein-Gordon equations.We find that the ηc(2980) can be bound in the nucleus.But the binding energies are in general quite different from that found by Brodsky et al.
Abstract:
By means of a generalized three-level solvable model,the self-consistent procedure for solving the Hartree-Fock(HF) equation is studied in some detail.It is pointed out that due attention must be paid for the multiplicity of solutions.Different crite...
By means of a generalized three-level solvable model,the self-consistent procedure for solving the Hartree-Fock(HF) equation is studied in some detail.It is pointed out that due attention must be paid for the multiplicity of solutions.Different crite...
Abstract:
The process of the dynamical symmetry breaking in nuclear IBM system is studied by using the topological approach and laying stress on the singular behavior and origin of the energy levels of avoided crossing.It is shown that avoided crossing is real...
The process of the dynamical symmetry breaking in nuclear IBM system is studied by using the topological approach and laying stress on the singular behavior and origin of the energy levels of avoided crossing.It is shown that avoided crossing is real...
Abstract:
All the data now available for the ground rotational bands of actinide even-even nuclei and rare-earth even-even nuclei are analyzed with eight formulas for rotational spectra.It can be seen from calculated results that the four-parameter I(I+1) expa...
All the data now available for the ground rotational bands of actinide even-even nuclei and rare-earth even-even nuclei are analyzed with eight formulas for rotational spectra.It can be seen from calculated results that the four-parameter I(I+1) expa...
Abstract:
By utilizing the 1/N expansion technique(ONET),the analytical expressions of low-lying energy spectrum,the deformation parameter and the reduced matrix elements of E2 transitions to the order of 1/N are systematically given for a consistent Q framewo...
By utilizing the 1/N expansion technique(ONET),the analytical expressions of low-lying energy spectrum,the deformation parameter and the reduced matrix elements of E2 transitions to the order of 1/N are systematically given for a consistent Q framewo...
Abstract:
The natural Osmium powder was irradiated with fast neutrons.After the chemical separation,the characteristic gamma ray spectra and the time-sequential spectra in the W fraction were measured.11 new gamma lines os 189W unknown previously were found.
The natural Osmium powder was irradiated with fast neutrons.After the chemical separation,the characteristic gamma ray spectra and the time-sequential spectra in the W fraction were measured.11 new gamma lines os 189W unknown previously were found.
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