Chinese Physics C > 1994, Vol. 18 > Issue(5): 404-408

Search for Light Neutral Particle in Low Energy e⁺e^－Annihilation

Institute of High Energy Physics, Academia Sinica, Beijing 1100039

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Abstract：
This paper reports the experiment result from a search for light neutral particle U by measuring the monoenergetic gamma ray in the singlet positronium annihilation: e ⁺e ^－(1S0)→γ+U. No evidence for the existence of such a particle of mass Mu＜2me has been found on the level of 2σ statndard deviation.

References

[1]	P.Fayet and M.Mezard,Phys.Lett,104B（1981）226.[2]G,Carboni,Phys.Lett,101B（1981）444.[3]G.Carboni and W.Dahme,Phys.Lett,123B（1983）349.[4]U.Amaldi et al.Phys.Lett,153B（1985）444.[5]Tang Xiaowei,Chinese Phys.Lett,,4（1987）1.[6]朱永生，实验物理中的概率和统计，科学出版社，（1991）398页。

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[2]	LIU Xi-Ming,SUN Xu-Bin. Strangeness Suppression in e⁺e^－Light Flavour Jets. Chinese Physics C, 2007, 31(2): 138-142.
[3]	LIU Xi-Ming,WANG Yong-Gang,ZHANG Xue-Yao. Hadrons Production from Light Quark Jets in e^＋e^－Annihilation. Chinese Physics C, 2004, 28(1): 11-16.
[4]	JIN Yi,LI Shi-Yuan,XIE Qu-Bing. Fragmentation of Light Initial Quarks into Charm Measons in e⁺e^－Annihilation. Chinese Physics C, 2003, 27(10): 852-856.
[5]	WANG Hai-Long,LIU Xi-Ming,WANG Yu-Shui. Mass Dependence of Hadron Production Rates in e⁺e^－Annihilations at High Energy. Chinese Physics C, 2002, 26(5): 471-476.
[6]	BES Collaboration. Measurement of Production Cross Section of D_s⁺D_s^－in e⁺e^－Annihilation at the Center-of-Mass Energy of s=4.03GeV. Chinese Physics C, 2001, 25(6): 465-475.
[7]	Chen Esheng,Wang Qun,Xie Qubing,Chen Yan. Multiplicity of D^*±in e⁺e^－Annihilation at s=29─35Gev. Chinese Physics C, 1998, 22(3): 234-240.
[8]	Lu Gongru,Li Haibo,Yang Yadong. One Loop PGBs Effects on tt Production in High Energy e⁺e^-Annihilation. Chinese Physics C, 1996, 20(6): 522-532.
[9]	Wang Zhengzhi. Probability of e⁺e^－Annihilation in High Energy Collision and Intermittency. Chinese Physics C, 1996, 20(1): 61-64.
[10]	Wang Qun,Xie Qubing. Production Percentages of L=1 Excited Baryons in e⁺e^－Annihilation. Chinese Physics C, 1994, 18(9): 807-812.
[11]	Liu Ximing. Difference of Particle Multiplicities Between Quark Jets of Different Flavors in e⁺e^－Annihilation. Chinese Physics C, 1994, 18(9): 829-835.
[12]	CHEN E-Sheng. Average Yields of Long-Lived Charged Particles in High Energy e⁺e^－Annihilation. Chinese Physics C, 1993, 17(3): 252-261.
[13]	CHEN E-Sheng,LI Ming-Ming. Yields of Charmed and Beautiful Mesons in e⁺e^－Annihilation at s=10—178GeV 的e⁺e^-. Chinese Physics C, 1991, 15(11): 981-990.
[14]	CHEN E-Sheng,XIE Qu-Bing. THE RATIO OF CHARMED BARYON TO MESON IN e⁺e^－ANNIHILATION. Chinese Physics C, 1990, 14(4): 319-324.
[15]	LIU Xi-Ming,WU Hua-You. THE FRAGMENTATION OF GLUON OF GLUON IN e⁺e^－ANNIHILATION. Chinese Physics C, 1990, 14(11): 1001-1006.
[16]	LIU Xi-Ming. THE FRAGMENTATION SCHEMES IN e⁺e^－ANNIHILATION. Chinese Physics C, 1990, 14(1): 31-35.
[17]	LIU Xi-Ming. BARYON PRODUCTION IN e⁺e^－ANNIHILATION. Chinese Physics C, 1989, 13(9): 803-807.
[18]	CHEN Zhi-Jiang,XIE Qu-Bing,MA Wen-Jun. THE NEAREST CORRELATION IN RAPIDITY AND THE MULTIPLICITY DISTRIBUTION IN e⁺e^－ANNIHILATION. Chinese Physics C, 1988, 12(6): 742-748.
[19]	QIU Zhong-Ping,CAI Xu. CYLINDRICAL BAG MODEL OF PARTICLE PRODUCTION IN HIGH ENERGY e⁺e^－ANNIHILATION. Chinese Physics C, 1988, 12(5): 708-711.
[20]	LIANG Zuo-Tang,XIE Qu-Bing. MULTIPLICITY DISTRIBUTION IN e⁺e^－ANNIHILATION. Chinese Physics C, 1987, 11(6): 840-843.

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He Jingtang, Zhu Guoyi, La Yusheng and Dong Xiaoli. Search for Light Neutral Particle in Low Energy e ⁺e ^－Annihilation[J]. Chinese Physics C, 1994, 18(5): 404-408.

He Jingtang, Zhu Guoyi, La Yusheng and Dong Xiaoli. Search for Light Neutral Particle in Low Energy e ⁺e ^－Annihilation[J]. Chinese Physics C, 1994, 18(5): 404-408. shu

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

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Search for Light Neutral Particle in Low Energy e⁺e^－Annihilation

Corresponding author:He Jingtang,

Institute of High Energy Physics, Academia Sinica, Beijing 1100039

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1994-05-05

Abstract:This paper reports the experiment result from a search for light neutral particle U by measuring the monoenergetic gamma ray in the singlet positronium annihilation: e⁺e^－(1S0)→γ+U. No evidence for the existence of such a particle of mass Mu＜2me has been found on the level of 2σ statndard deviation.