1999 Vol. 23, No. 8
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Abstract:
The decay J/ψ→γπ0π0 is studied with 7.0×106 produced J/ψ events collected by the Bening Spectrometer(BES) with the tugger mode senseuve to both chmped and neutral final state at the Bening Electron-Positron Collider(BEPC), The evidences for the exist...
The decay J/ψ→γπ0π0 is studied with 7.0×106 produced J/ψ events collected by the Bening Spectrometer(BES) with the tugger mode senseuve to both chmped and neutral final state at the Bening Electron-Positron Collider(BEPC), The evidences for the exist...
Abstract:
The energy spectra of intermediate-mass fragments (IMF) (3≤Z≤16) have been measured from 6° to 110° for 40Ar+natAg reachon at 30 MeV/u. The energy spectra were analyzed by the moving source model. The natUres of the projechle-like source, target-like...
The energy spectra of intermediate-mass fragments (IMF) (3≤Z≤16) have been measured from 6° to 110° for 40Ar+natAg reachon at 30 MeV/u. The energy spectra were analyzed by the moving source model. The natUres of the projechle-like source, target-like...
Abstract:
An experimental method of measuring backward sputtering induced by fast neutron is described. Backward sputtering yields of 10 malterials of Mg, Al, Sc, V, Fe,Co, Cu, Zr, An and type 316 stainless steel are measured and compared with forward sputteri...
An experimental method of measuring backward sputtering induced by fast neutron is described. Backward sputtering yields of 10 malterials of Mg, Al, Sc, V, Fe,Co, Cu, Zr, An and type 316 stainless steel are measured and compared with forward sputteri...
Abstract:
The problem about ηc decay into two vector mesons, such as ηc→ρρ, K* K*,φφ. are discussed in the Bethe-Salpeter framework. Both constituent quark mass and intrinsic quark transverse inchon inside the final state mesons are taken into account and thei...
The problem about ηc decay into two vector mesons, such as ηc→ρρ, K* K*,φφ. are discussed in the Bethe-Salpeter framework. Both constituent quark mass and intrinsic quark transverse inchon inside the final state mesons are taken into account and thei...
Abstract:
We investigate the vacuum state of (2+1)-dimensional U(1) lattice gauge field theory, and derive the parameters of the continuum vacuum wave function in great details. The numerical results from the truncated eigenvalue equation method are also provi...
We investigate the vacuum state of (2+1)-dimensional U(1) lattice gauge field theory, and derive the parameters of the continuum vacuum wave function in great details. The numerical results from the truncated eigenvalue equation method are also provi...
Abstract:
in this paper we use the Batalin-Fradkin-Vilkovisky (BFV) formalism to study the quanhzation of a scalar QED with Chern-Simons term. The conserved laws of energy, momenttum and angular momentum at the quantal level of the system are obtained. The pro...
in this paper we use the Batalin-Fradkin-Vilkovisky (BFV) formalism to study the quanhzation of a scalar QED with Chern-Simons term. The conserved laws of energy, momenttum and angular momentum at the quantal level of the system are obtained. The pro...
Abstract:
The experimental results on maximum pseudo-rapidity ηmax distribution in the charge exchange process e+p→e+n+X is discussed in thes paper. The contributions of reggeon from regge phenomenology and π+ -exchange from pion cloud medel is calculated. The...
The experimental results on maximum pseudo-rapidity ηmax distribution in the charge exchange process e+p→e+n+X is discussed in thes paper. The contributions of reggeon from regge phenomenology and π+ -exchange from pion cloud medel is calculated. The...
Abstract:
The influence of the I=1 staggering and the fluctuation in observed γ-tyanstion energies on the spin assignments of superdeformed bands is taken into account properly. An improved approach for removing the fluctuations from the observed y transition ...
The influence of the I=1 staggering and the fluctuation in observed γ-tyanstion energies on the spin assignments of superdeformed bands is taken into account properly. An improved approach for removing the fluctuations from the observed y transition ...
Abstract:
Alignment additivity of the superdeformed (SD) bands in odd-odd nuclei 194Tl and 196 Bi is investigared with the level spins determined by the Cranking Bohr-Mottelson Model. The alignments of four of the six SD bands in 194Tl can be accounted for fro...
Alignment additivity of the superdeformed (SD) bands in odd-odd nuclei 194Tl and 196 Bi is investigared with the level spins determined by the Cranking Bohr-Mottelson Model. The alignments of four of the six SD bands in 194Tl can be accounted for fro...
Abstract:
The properties of proton-rich and their mirror nucleus in 2sld shell have been investigated by relahvistic mean field theory. The results obtained by relahvistic mean field theory are in good agreement with experimental data.
The properties of proton-rich and their mirror nucleus in 2sld shell have been investigated by relahvistic mean field theory. The results obtained by relahvistic mean field theory are in good agreement with experimental data.
Abstract:
Based on the two-body correlation dynamics(TBCD) introduced by Wang et al., we have taken the bine dependent single pride states as working basis to derive the tWo-body correlation transport theory (TBCTT) for describing the dynamical process of HIC....
Based on the two-body correlation dynamics(TBCD) introduced by Wang et al., we have taken the bine dependent single pride states as working basis to derive the tWo-body correlation transport theory (TBCTT) for describing the dynamical process of HIC....
Abstract:
1.65h 95Ru was produced and studied by y ray spectroscopy of 92Mo(a, n)reaction, 34 of the 130 obversed y rays following 95Ru decay are new. According to coincidence relations, 29 new γ rays were flited into level scheme, the placement of 7 γ rays in...
1.65h 95Ru was produced and studied by y ray spectroscopy of 92Mo(a, n)reaction, 34 of the 130 obversed y rays following 95Ru decay are new. According to coincidence relations, 29 new γ rays were flited into level scheme, the placement of 7 γ rays in...
Abstract:
An analytic treatment of multi-bunch potential well distortion for a twobeam storage ring is presented. The longitUdinal wake effects are separated into: the mode loss, the synchrotron tUne shift (both due to potential well distortion) and the cohere...
An analytic treatment of multi-bunch potential well distortion for a twobeam storage ring is presented. The longitUdinal wake effects are separated into: the mode loss, the synchrotron tUne shift (both due to potential well distortion) and the cohere...
Abstract:
Direct hard PhotoProduction of J/ψ and γ at LHC Pb-Pb collisions with CMS energy 5.5ATeV, and Ca-Ca collisions with CMS energy 7ATeV, are discussed in the process: A+A→A+J/ψ(γ) + X. It turns out that the processes can be used to testing the gluon dis...
Direct hard PhotoProduction of J/ψ and γ at LHC Pb-Pb collisions with CMS energy 5.5ATeV, and Ca-Ca collisions with CMS energy 7ATeV, are discussed in the process: A+A→A+J/ψ(γ) + X. It turns out that the processes can be used to testing the gluon dis...
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