1992 Vol. 16, No. S4
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Abstract:
The τ lepton mass was measured with the data taken by the Beijing spectrometer (BES) at the BEPC at the Institute of High Energy Physics in Beijing. Approximately 5000 nb-1 integrated luminosity was accumulated. Pairs of τ lepton produced near the th...
The τ lepton mass was measured with the data taken by the Beijing spectrometer (BES) at the BEPC at the Institute of High Energy Physics in Beijing. Approximately 5000 nb-1 integrated luminosity was accumulated. Pairs of τ lepton produced near the th...
Abstract:
This paper reports the design and construction of the primary beam of the test beam on the BEPC, as well as the acquisition of the positive-charged secondary beam. The various particles, e+,π+,μ+, p, in the secondary beam have been measured with TOF ...
This paper reports the design and construction of the primary beam of the test beam on the BEPC, as well as the acquisition of the positive-charged secondary beam. The various particles, e+,π+,μ+, p, in the secondary beam have been measured with TOF ...
Abstract:
The pseudorapidity distributions of charged particles produced in pp collisions at 400 GeV/c have been measured using LEBC films. The multiplicity distributions in forward hemisphere at fixed total multiplicities are obtained. The forward-backward mu...
The pseudorapidity distributions of charged particles produced in pp collisions at 400 GeV/c have been measured using LEBC films. The multiplicity distributions in forward hemisphere at fixed total multiplicities are obtained. The forward-backward mu...
Abstract:
The measurements of radiation damage of a tile/fiber scintillator modules to be used for the SDC calorimeter are described. Four tile scintillator modules were irradiated up to 6 Mrad with the BEPC 1.1 GeV electron beam. We have studied the light out...
The measurements of radiation damage of a tile/fiber scintillator modules to be used for the SDC calorimeter are described. Four tile scintillator modules were irradiated up to 6 Mrad with the BEPC 1.1 GeV electron beam. We have studied the light out...
Abstract:
Based on the 2.5 million J/ψ's collected by the Beijing spectrometer at the Beijing electron positron collider, through the hadronic decay J/ψ → ωf2 (1270),f2(1270) → π+π-, ω→π+π-π0, we studied the properties of the resonance f2(1270):the mass,width,...
Based on the 2.5 million J/ψ's collected by the Beijing spectrometer at the Beijing electron positron collider, through the hadronic decay J/ψ → ωf2 (1270),f2(1270) → π+π-, ω→π+π-π0, we studied the properties of the resonance f2(1270):the mass,width,...
Abstract:
Using the precise expression of electron, positron distribution functions we obtained previously, we get the rigorous analytical expression of the radiator in e+e- collision processes. This series expression converges rapidly to the precise result re...
Using the precise expression of electron, positron distribution functions we obtained previously, we get the rigorous analytical expression of the radiator in e+e- collision processes. This series expression converges rapidly to the precise result re...
Abstract:
The hadronic decay processes J/ψ→V1+X、X→ V2 + V3,V2,V3→2P (or 3P) (where Vi and P stand for the vector arid pseudoscalar meson, respectively) are discussed in this paper. For the intermediate state X with various spin-parity JP, the corresponding hel...
The hadronic decay processes J/ψ→V1+X、X→ V2 + V3,V2,V3→2P (or 3P) (where Vi and P stand for the vector arid pseudoscalar meson, respectively) are discussed in this paper. For the intermediate state X with various spin-parity JP, the corresponding hel...
Abstract:
We constructed the factorizable S-matrix and obtained the symmetry operator which commutes with the 5-matrix and has a new form of "coproduct," the elements of which depend on the parameters defining the toroidal rapidity surface. By defining a new o...
We constructed the factorizable S-matrix and obtained the symmetry operator which commutes with the 5-matrix and has a new form of "coproduct," the elements of which depend on the parameters defining the toroidal rapidity surface. By defining a new o...
Abstract:
This paper studies the influence on the baryon and its resonances from a new additional mass term which is derived by the Skyrme Lagrangian after quantum mechanical treatment.
This paper studies the influence on the baryon and its resonances from a new additional mass term which is derived by the Skyrme Lagrangian after quantum mechanical treatment.
Abstract:
The structure and Verma module of the matrix element algebra A(3)q of the quantum group GL(3)q are studied using a similar method for studying the structure and Verma module of semisimple Lie algebras. The q-boson realization of A(2)q is constructed ...
The structure and Verma module of the matrix element algebra A(3)q of the quantum group GL(3)q are studied using a similar method for studying the structure and Verma module of semisimple Lie algebras. The q-boson realization of A(2)q is constructed ...
Abstract:
The influence ofmulti-pion correlations on two-pion interferometry analyses in multi-pion events can be expressed as the ratio of a multi-pion correlation factor for the sample of like-pion pairs to a residual correlation factor for the reference sam...
The influence ofmulti-pion correlations on two-pion interferometry analyses in multi-pion events can be expressed as the ratio of a multi-pion correlation factor for the sample of like-pion pairs to a residual correlation factor for the reference sam...
Abstract:
By means of the quark-antiquark pair creation model via one-gluon exchange, the effective ion among quarks,which is equivalent to the meson exchange intervening between two hadrons, is discussed. It is shown that this process includes interactions no...
By means of the quark-antiquark pair creation model via one-gluon exchange, the effective ion among quarks,which is equivalent to the meson exchange intervening between two hadrons, is discussed. It is shown that this process includes interactions no...
ISSN 1674-1137 CN 11-5641/O4
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