1991 Vol. 15, No. 10

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Review
The Measurement of the Performance of L3 Hadron Calorimeter With BGO
CHEN Guo-Ming, CHEN He-Sheng, TANG Xiao-Wei, TONG Guo-Liang, WU Yi-Gen, ZHANG Shou-Yu, WANG Yi-Fang
1991, 15(10): 865-874.
Abstract:
The four L3 hadron calorimeter moduies with BGO have been tested with pion beams of energies between 4 and 20GeV.L3 calorimeter,the gas sampling Uranium module and its test with beam are bricfly described.The energy resolution for pions with energies...
The Radiation Field Measurement in the 200MeV Electron Linac Tunnel
LI Yu-Xiong, LIANG Ren-You, LI Jue-Xin, XU Yun-Hua
1991, 15(10): 875-880.
Abstract:
To measure the radiation level in tunnel during a Linac running period,can provide important data to improve the machine,forcast the lives of electronic devices and other materials,exploit the radiation field as well.This paper introduces the propert...
The Cocycle Condition of Liouville Theory and Its Application to the 2-D Induced Gravity(Ⅱ)
WANG Zhong-Hua, WU Ke, GUO Han-Ying
1991, 15(10): 881-889.
Abstract:
In terms of the cocycle condition of Liouville theory,we have got the composition law in the theory of Beltrami-Liouville gravity as well as its Ward identity and its energy-momentum tensor,i.e. the extended Schwarzian derivative.
Compact Baby Universe Model in ten Dimension and Probability Function of Quantum Gravity
YAN Jun, HU Shi-Ke
1991, 15(10): 890-897.
Abstract:
In this paper,the quantum probability functions are calculated for ten-dimensional compact baby universe model.We find that the probability for the Yang-Mills baby universe to undergo a spontaneous compactification down to a four-dimensional spacetim...
Central Extension of the Quantum Deformed Virasoro Algebra
HU Zhan-Ning
1991, 15(10): 898-905.
Abstract:
The quantum deformation of the Jacobi identity was presented and the central extension of the q-deformed Virasoro algebra was found when q is a root of unit.The explicit expressions of the central terms have been obtained with the Beraha q values.
Distribution in Ultrarelativistic Nuclear Collisions
QIAN Lu
1991, 15(10): 906-912.
Abstract:
The distribution of average transverse-momentum of secondary particles produced in the central region of ultrarelativistic nuclear collisions is studied quantatively with the hydrodynamic model and is compared with JACEE data.The energy density funct...
Three-Body Structure and Interparticle Correlations of the Doubly Λ Hypernucleus ΛΛ6He
DUAN Yi-Wu
1991, 15(10): 913-918.
Abstract:
Based on the ΛΛα three-body model,variational calculations for the doubly Λ hypernucleus ΛΛ6He have been completed with the aid of the harmonic oscillator formlism.Then detailed analysis on the shape-density of the system has been made and the interp...
The Deuteron Microscopic Optical Potential
LU Cong-Shan, ZHANG Jing-Shang, SHEN Qing-Biao
1991, 15(10): 919-927.
Abstract:
In this paper,the two particle Green's function is introduced.When the direct interaction between two nucleons is neglected,the first and second order mass operators of two particles are the sum of those for each particle.The nucleon microscopic opti...
Microscopic Analysis of Intruder States and Configuration Mixing in Even-Even Nuclei Near Closed Shells
LI Xian-Yin, ZHAO Xiao-Feng, WANG Yu-Cheng, LIU Yong
1991, 15(10): 928-936.
Abstract:
In this paper,a microscopic theory describing the intruder states in even-even nuclei near closed shells is appiled to calculate the low-lying spectrum and wavefunctions corresponding to 110Cd configurations.The affects of several factors on the form...
Nuclear Shadowing Effect
LI Guang-Lie, YANG Jian-Jun, SHEN Hong-Qing
1991, 15(10): 937-952.
Abstract:
The recent progress in the experiments and theoretical descriptions of the nuclear shadowing effect is presented.
Relativistic Two-body Wave Equation and the Short-range Interaction of Quarkonium
LUO Zhen-Fei, QIU Xi-Jun
1991, 15(10): 953-955.
Abstract:
The Feynman-Hellmann theorem widely used in nonrelativistic quantum mechanics is applied to relativistic two-body wave equations from which we obtain the meson mass formula It is shown that wave equations considered here are unable to describe the sh...
Is There a New Parameter in QED
Bruce H, WU Dan-Di
1991, 15(10): 956-960.
Abstract:
The Fermion mass with aparity violating part in quantum electrodynamics (QED) is allowed in principle and hence introduces a new parameter.Explicit parity violating effect,the electric dipole moment is shown.A chiral rotation may turn the mass into r...

ISSN 1674-1137 CN 11-5641/O4

Original research articles, Ietters and reviews Covering theory and experiments in the fieids of

  • Particle physics
  • Nuclear physics
  • Particle and nuclear astrophysics
  • Cosmology
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