Experimental Investigation for the Decay Rate of Orthopositronium

ZHANG Tian-Bao; YANG Guang-Ming; GUO Bao-Nian; WANG Hai-Dong

Chinese Physics C> 1992, Vol. 16> Issue(7) : 577-581

Experimental Investigation for the Decay Rate of Orthopositronium

Institute of High Energy Physics,Academia,Beijing 100080

Abstract
HTML
Reference
Related

PDF

Abstract：
A method for the measurement of the vacuum decay rate λ₀ of orthopositronium is suggested and the preliminary result is obtained λ₀=7.034±0.013μs^－1.The possibility for the improvement of the experiment has been discussed.

References

[1]

S. Hatamian, R. S. Conti A. Rich, Phys. Rev. Letters, v58(1987), 1833.[2] S. Asai, S. Orito, T. Sanuti, M. Yasuda T. Yokoi, Phys. Rev. Letters, v66(1991), 1298.[3] Chang Tianbao, Tang Hsiowei Li Yaoqing, Physics Letters, V157B(1985), 357.[4] G. S. Adkins, Ann. Phys. (N. Y.), 146(1983), 78.[5] J. S. Nico, D. W. Gidley, A. Rich P. W. Zitzewitz, Phys. Rev. Letters, V65(1990), 1344.[6] D. W. Gidley, et al., Phys. Rev. Letters, V36(1978), 737.[7] C. 1. Westbroak, et al，Phys. Rev. Letters, V58(1987), 1328.[8] D. W. Gidley, et al., Phys. Letters. V69A(1978), 97.[9] Chang Tianbao, Xu Ming Zheng Xiantao, Physics Letters, V126A(1987), 189.[10] G. S. Adkins, et al., Phys. Rev,, V28A(1983), 1164.

[1]	MO Xiao-Hu , YUAN Chang-Zheng , WANG Ping . Study of the ρπ Puzzle in Charmonium Decays. Chinese Physics C, 2007, 31(7): 686-701.
[2]	YUAN Chang-Zheng . Hadron Spectroscopy and Charmonium Decays from BES and CLEOc. Chinese Physics C, 2006, 30(6): 488-496.
[3]	LIU Bo , GU Meng-Ping , CHi-Yun-Long , YANG Xing-Wang , TIAN Shuang-Min . Study on BEPC Experimental Electron Gun System. Chinese Physics C, 2005, 29(5): 507-511.
[4]	XU Yan-Bing , LIAO Ji-Zhi . Studies on the HF States and the Negative-Parity Spectra of Even Even Cd Nuclei. Chinese Physics C, 2003, 27(2): 142-146.
[5]	XU Yan-Bing , LIAO Ji-Zhi . Studies on the HF States and the Negative Parity Bands of Even Even Ge and Se Nuclei. Chinese Physics C, 2002, 26(6): 613-619.
[6]	BESCollaboration . Study of Decay J/ψ→γγV(ρ,φ). Chinese Physics C, 2000, 24(10): 892-900.
[7]	Zhang Zhanjun , Liu Yong , Sang Jianping . Microscopic Study of Low-Lying States of Even ^190─200Pt Isotopes. Chinese Physics C, 1998, 22(9): 836-843.
[8]	Li Xinhua , Gu Yifan . Comments on the Ratio of Hadronic Decay Rates of ψ(2S)to J/ψ. Chinese Physics C, 1998, 22(4): 293-298.
[9]	BES Collaboration . Experimental Study of f₀ (975) in the J/ψ Decays. Chinese Physics C, 1995, 19(4): 289-295.
[10]	Peng Liangqiang , Zhang Tianbao , Wang Haidong , Meng Bonian , Yin Guoli . Improved Measurement of γ-Energy from Parapositronium 2γ-Decay. Chinese Physics C, 1995, 19(11): 987-990.
[11]	Zhang Dali , Liu Yuxin , Han Qizhi . An IBM2 Description on the Low-lying States of Even-even Xe Isotopes. Chinese Physics C, 1994, 18(12): 1130-1136.
[12]	Sang Jianping , Liu Yong . Microscopic investigation of High-Spin States for Even-Even Nuclei(Ⅰ) Approach. Chinese Physics C, 1994, 18(10): 936-942.
[13]	Sang Jianping , Liu Yong . Microscopic Investigation of High-Spin States for Even-Even Nuclei(Ⅱ) Application to isotones ¹⁵⁴Dy,¹⁵⁶Er and ¹⁵⁸Yb. Chinese Physics C, 1994, 18(11): 1020-1026.
[14]	Sang Jianping , Liu Yong . The Microscopic Investigation of High-Spin States for Even-Even Nuclei(III)Application to isotopes ¹²⁶Ba,¹²⁸Ba and ¹³⁰Ba. Chinese Physics C, 1994, 18(12): 1102-1106.
[15]	Qian Chengde . Effects of Positive-Parity States Octupole Correlations for Even-Even Nuclei in Rotational Regions. Chinese Physics C, 1994, 18(5): 473-480.
[16]	ZHANG Tian-Bao , WANG Hai-Dong , SHEN Zhi-Qi . Measurement of the Gamma Ray Energy in Parapositronium 2γ Decay. Chinese Physics C, 1991, 15(6): 486-492.
[17]	ZHANG Tian-Bao , XU Min . TRIPLET TO SINGLET CONVERSION OF POSITRONIUM IN OXYGEN. Chinese Physics C, 1990, 14(4): 289-295.
[18]	YANG Bao-Zhong , TAN Yong , TANG Xiao-Wei , BIAN Zu-He . THE ANGULAR DISTRIBUTION OF PHOTONS IN ORTHOPOS-ITRONIUM THREE PHOTON DECAY. Chinese Physics C, 1989, 13(6): 487-489.
[19]	ZHANG Tian-Bao , TANG Xiao-Wei , WANG Yun-Yu , LI Yao-Qing , YIU Ke , WANG Shao-Jie . MEASUREMENT OF THE WHOLE GAMMA-RAY ENERGY SPECTRUM IN o-Ps 3 GAMMA-DECAY. Chinese Physics C, 1984, 8(4): 385-391.
[20]	ZHANG Tian-Bao , WANG Yun-Yu , ZHANG Chang-Chun , WANG Shao-Jie . THE OBSERVATION ON o-P_s ANNIHILATION IN SILICA AEROGEL BY COMBINED SPECTROMETER. Chinese Physics C, 1983, 7(1): 1-4.

Access

Get Citation

ZHANG Tian-Bao, YANG Guang-Ming, GUO Bao-Nian and WANG Hai-Dong. Experimental Investigation for the Decay Rate of Orthopositronium[J]. Chinese Physics C, 1992, 16(7): 577-581.

ZHANG Tian-Bao, YANG Guang-Ming, GUO Bao-Nian and WANG Hai-Dong. Experimental Investigation for the Decay Rate of Orthopositronium[J]. Chinese Physics C, 1992, 16(7): 577-581. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1900-01-01
Revised: 1900-01-01

Article Metric

Article Views(2666)
PDF Downloads(405)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Experimental Investigation for the Decay Rate of Orthopositronium

Corresponding author: ZHANG Tian-Bao,

Institute of High Energy Physics,Academia,Beijing 100080

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1992-07-05

Abstract: A method for the measurement of the vacuum decay rate λ₀ of orthopositronium is suggested and the preliminary result is obtained λ₀=7.034±0.013μs^－1.The possibility for the improvement of the experiment has been discussed.