1990 Vol. 14, No. S1
Display Method: |
Abstract:
The arrangement and design performance of the muon identifier in the Beijing Spectrometer (BES) are described. The gas gain, plateau feature, drift time, detection efficiency, charge division for the hit location and other characteristics of the muon...
The arrangement and design performance of the muon identifier in the Beijing Spectrometer (BES) are described. The gas gain, plateau feature, drift time, detection efficiency, charge division for the hit location and other characteristics of the muon...
Abstract:
The nature of the medium lifetime component of positron annihilation in a Teflon (PTFE) polymer has been investigated by usiiig a recently developed Time Selecting γ Energy Spectrometer with and without a magnetic field. It has been assigned to o-Ps ...
The nature of the medium lifetime component of positron annihilation in a Teflon (PTFE) polymer has been investigated by usiiig a recently developed Time Selecting γ Energy Spectrometer with and without a magnetic field. It has been assigned to o-Ps ...
Abstract:
Based on the proposed model of e+e- annihilation into two jets proposed, we further assume that the rapidity distribution of quarks is a uniform one with the constraint of four-momentum conservation. The semi-inclusive rapidity distributions and the ...
Based on the proposed model of e+e- annihilation into two jets proposed, we further assume that the rapidity distribution of quarks is a uniform one with the constraint of four-momentum conservation. The semi-inclusive rapidity distributions and the ...
Abstract:
The differential realization of Lie superalgebra B(0,1) on the space of inhomogeneous polynomials (called inhomogeneous differential realization), and the corresponding inhomogeneous Boson-Fermion realization are studied. By making use of the inhomog...
The differential realization of Lie superalgebra B(0,1) on the space of inhomogeneous polynomials (called inhomogeneous differential realization), and the corresponding inhomogeneous Boson-Fermion realization are studied. By making use of the inhomog...
Abstract:
A comparison of two different fragmentation schemes in e+e- annihilation is presented in this paper. After further calculations of the average number of various final hadrons and comparison with experiments, we find that the independent fragmentation...
A comparison of two different fragmentation schemes in e+e- annihilation is presented in this paper. After further calculations of the average number of various final hadrons and comparison with experiments, we find that the independent fragmentation...
Abstract:
The phase diagram of the system of SU(2) gauge field coupled with the fixed length Higgs field in the fundamental representation has been calculated analytically on the lattice by the variational-cumulant expansion method to the third order approxima...
The phase diagram of the system of SU(2) gauge field coupled with the fixed length Higgs field in the fundamental representation has been calculated analytically on the lattice by the variational-cumulant expansion method to the third order approxima...
Abstract:
The existence of two Higgs-doublets alters the splittings of 1p and 2p tt states and reduces the ratios of the splittings, R. Their fine measurement will be helpful to clarify the existence of Higgs particles.
The existence of two Higgs-doublets alters the splittings of 1p and 2p tt states and reduces the ratios of the splittings, R. Their fine measurement will be helpful to clarify the existence of Higgs particles.
Abstract:
In this paper, we analyse the spatially overlapping behaviour of the sea quarks of neighboring nucleons in nuclei in the small x region and give a relation between the nuclear shadowing factor R(x, Q2, A) and the spatially overlapping factor ΔVA(x)/V...
In this paper, we analyse the spatially overlapping behaviour of the sea quarks of neighboring nucleons in nuclei in the small x region and give a relation between the nuclear shadowing factor R(x, Q2, A) and the spatially overlapping factor ΔVA(x)/V...
Abstract:
A 1+1 dimensional U(1) gauge model is proposed and the spectrum with the energy eigenstates represented in terms of fermion operators is exactly solved.
A 1+1 dimensional U(1) gauge model is proposed and the spectrum with the energy eigenstates represented in terms of fermion operators is exactly solved.
Abstract:
In the non-relativistic case the properties of the adiabatic approximation solution of the Schrödinger equation in the moving reference frame and the corresponding Berry's phase factor are discussed in this paper. Translation and rotation reference f...
In the non-relativistic case the properties of the adiabatic approximation solution of the Schrödinger equation in the moving reference frame and the corresponding Berry's phase factor are discussed in this paper. Translation and rotation reference f...
Abstract:
A detailed comparison between the Hartree-Fock (HF) and the mass operator (M) potential is made by means of a solvable three-level model. It is found that in a quite large region of force parameters (FPR) the M potential gives a much better result th...
A detailed comparison between the Hartree-Fock (HF) and the mass operator (M) potential is made by means of a solvable three-level model. It is found that in a quite large region of force parameters (FPR) the M potential gives a much better result th...
Abstract:
Excitation functions for 21 products of the reaction induced by 16O on 115In have been determined in an energy region between 51 and 97 MeV using nuclear chemistry techniques. The experimental results have been compared with those calculated using Al...
Excitation functions for 21 products of the reaction induced by 16O on 115In have been determined in an energy region between 51 and 97 MeV using nuclear chemistry techniques. The experimental results have been compared with those calculated using Al...
Abstract:
A plastic scintillator beta-detector telescope has been built and calibrated. Tests show that the uncertainty of linear energy calibration in the range of endpoint energy between 0.7 and 6.1 MeV for both β- and β+-emitters is 35 keV.
A plastic scintillator beta-detector telescope has been built and calibrated. Tests show that the uncertainty of linear energy calibration in the range of endpoint energy between 0.7 and 6.1 MeV for both β- and β+-emitters is 35 keV.
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Original research articles, Ietters and reviews Covering theory and experiments in the fieids of
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- Cosmology
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