Measurements of the Branching Ratios for the Decays J/ψ→γπ<SUP>0</SUP>,γη, γη'→ 3γ at BES

BES Collaboration

近期发现有不法分子冒充我刊与作者联系，借此进行欺诈等不法行为，请广大作者加以鉴别，如遇诈骗行为，请第一时间与我刊编辑部联系确认（《中国物理C》（英文）编辑部电话：010-88235947,010-88236950），并作报警处理。

本刊再次郑重声明：

（1）本刊官方网址为cpc.ihep.ac.cn和https://iopscience.iop.org/journal/1674-1137

（2）本刊采编系统作者中心是投稿的唯一路径，该系统为ScholarOne远程稿件采编系统，仅在本刊投稿网网址（https://mc03.manuscriptcentral.com/cpc）设有登录入口。本刊不接受其他方式的投稿，如打印稿投稿、E-mail信箱投稿等，若以此种方式接收投稿均为假冒。

（3）所有投稿均需经过严格的同行评议、编辑加工后方可发表，本刊不存在所谓的“编辑部内部征稿”。如果有人以“编辑部内部人员”名义帮助作者发稿，并收取发表费用，均为假冒。

《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 1997, Vol. 21> Issue(5) : 385-392

Measurements of the Branching Ratios for the Decays J/ψ→γπ⁰,γη, γη'→ 3γ at BES

BES Collaboration

Institute of High Energy Physics, The Chinese Academy of Scinces, Beijing 100039

Abstract
HTML
Reference
Related

PDF

Abstract：
Decays of the J/ψ resonance into the final states with three photons are investigated.Branching ratios for the decays of J/ψ→γπ⁰ and J/ψ→γη'are determined to be Br (J/ψ→γπ⁰)=(4.6±1.1)×10^－5 and. Br(J/ψ→γη')＝(4.12±0.82)×10^－3. The ratio of the two decay rates,(J/ψ→γη')/(J/ψ→γη),is 4.79±0.85. Within experimental errors, this value agrees well with the predictions of two theoretical models'.

References

[1]

丁慧良等、高能物理与核物理，16（1992）769,[2]周月华等，高能物理与核物理，13（1989）973.[3]过雅南、郁忠强等，高能物理与核物理，14（1990）1057.[4]M,Krammer et al.,Nucl.Phys.,B229（1983）115.[5]T.F.Walsh,Nuow.Cim Lett.,14（1975）290.[6]E.D.Bloom,G.W.Peck,Ann.Rev.Nucl.and Part.Scie,33（1983）143.[7]H.Fritzsch et.al.,Phys.Lett.,B66（1977）365.[8]郁宏，高能物理与核物理，12（1988）754.[9]R.M.Bamett et al.,physical Review,D54（1996）1.

[1]	, , . Particle Identification using Artificial Neural Networks at BESIII. Chinese Physics C, 2008, 32(1): 1-8. doi: 10.1088/1674-1137/32/1/001
[2]	HAO Gang , QIAO Cong-Feng , ZHANG Ai-Lin . One Interpretation for Recent BES Observation. Chinese Physics C, 2007, 31(9): 840-843.
[3]	GUO Yun-Jun , HE Kang-Lin . Muon Identification Using the Efficiencies Ratio Method at BESⅡ. Chinese Physics C, 2007, 31(11): 1050-1055.
[4]	CHEN Jun-Xiao , HOU Zhao-Yu , LI Ying , . Branching ratio of rare decay B⁰(B_s)→γνν. Chinese Physics C, 2006, 30(4): 289-293.
[5]	LI Hui-Hong , LIU Feng , LI Jin , YUAN Chang-Zheng , WANG Zhi-Yong . Study of the p and p Identification at BES Ⅱ. Chinese Physics C, 2003, 27(8): 659-664.
[6]	BES Callaboration . Decay of the J/ψ to Σ⁰Σ⁰ Final State. Chinese Physics C, 2002, 26(2): 93-99.
[7]	BES Collaboration . Measurement of Inclusive Semileptonic Branching Fractions for D^－→e^－X and D⁰→e^－X. Chinese Physics C, 2002, 26(6): 547-556.
[8]	HUANG GuangShun , CHENG BaoSen , YUAN ChangZheng , LI XinHua , QIXiangRong , LIU Jing , CHEN GuangPei , CHEN JiangChuan , HU HaiMing , HU Tao , JU Xin , LI Jin , MAO ZePu , XUE ShengTian , ZHANG LiangSheng , ZHENG ZhiPeng , ZHOU Li , ZHAO ZhengGuo . New Methods to Measure Integrated Luminosity at BES. Chinese Physics C, 2000, 24(5): 373-378.
[9]	BES Collaboration . J/ψ Physics at BES. Chinese Physics C, 1999, 23(2): 97-102.
[10]	Liu Zhenan , Chen Guoming , Chen Hesheng , Tang Xiaowei . Measurement of the τ Polarization Asymmetry in τ→a₁ v→π^±π⁰π⁰v Decay at Z⁰ Peak. Chinese Physics C, 1998, 22(11): 990-995.
[11]	BES Collaboration . Measurement of the Branching Ratios of τ^±→π^±+nπ⁰+ν_τ(n=0,1,2) decays. Chinese Physics C, 1997, 21(3): 193-200.
[12]	Gu Jianhui , Yu Zhongqiang . Muon Sample Selection from Cosmic Ray Events for BES. Chinese Physics C, 1996, 20(1): 26-31.
[13]	BES Collaboration . Determination of J/ψ Leptonic Branching Fraction Via ψ(2S)→π⁺π^－J/ψ. Chinese Physics C, 1996, 20(2): 97-106.
[14]	Ye Shuwei , Chen Hongfang , Wu Jian , Zhang Ziping , Niu Hongquan , Xu Tong , Tong Guoliang , LV Feng , Li Yong , Zeng Jiyang , Wu Yigen , Yi Kai , Chen Xiangyang , Xu Mi . Relative Likelihood and e/π Separation at BES. Chinese Physics C, 1995, 19(12): 1072-1077.
[15]	Yu Zhongqiang , Zhao Dixin , Gu Jianhui , Guo Yanan , Zhang Bingyun , Ding Huiliang , Li Weidong . Trigger Efficiency Measurement of BES. Chinese Physics C, 1995, 19(12): 1062-1067.
[16]	BAI JINGZHI , BIAN QING , CHEN LEJUN , CHEN SHENNAN , CHEN YAQING , CHEN ZHAOQING , CHI YANKUN , CUI HUACHUAN , CUI XIANGZONG , DENG SHUEN , DENG YIWEI , DING HUILIANG , DONG BAOZHAONG , DONG XUESHENG , DU XIA , DU ZHIZHEN , FANG CHENG , FENG ZHONG , FU ZHENGSHAN , GAO CUISHAN , GAO MEILI , GAO SHUQI , GAO WENXIU , GAO YUANNING , GU SHUDI , GU WEIX , , , , , , , , , , , , , , , , , , , . Beijing Spectrometer. Chinese Physics C, 1992, 16(9): 769-789.
[17]	ZHANG Ge , ZHU Shan-Gen , ZHOU Yong-Shen , ZHAO Meng , ZHAO Di-Xin , LI Jia , HAN Shi-Wen , FU Zheng-Shan . Magnetic Axis Measurement in the Solenoid of Beijing Spectrometer. Chinese Physics C, 1991, 15(3): 200-206.
[18]	SONG Xiao-Tong , DAI You-Shan . THE COULOMB DISINTEGRATION CROSS-SECTION AND DECAY RATE OF THE SPIN (0－3/2) ELECTROMAGNETIC BOUND SYSTEM. Chinese Physics C, 1987, 11(1): 24-31.
[19]	LIN Jin-Hu , ZHENG Zhe-Zhu . THE HADRON 1→0 DECAY PROCESSESIN A 3+1 DIMENSIONAL THEORY. Chinese Physics C, 1986, 10(2): 153-157.
[20]	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.

Access

Get Citation

BES Collaboration. Measurements of the Branching Ratios for the Decays J/ψ→γπ⁰,γη, γη'→ 3γ at BES[J]. Chinese Physics C, 1997, 21(5): 385-392.

BES Collaboration. Measurements of the Branching Ratios for the Decays J/ψ→γπ⁰,γη, γη'→ 3γ at BES[J]. Chinese Physics C, 1997, 21(5): 385-392. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

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

Article Metric

Article Views(3958)
PDF Downloads(489)
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

Measurements of the Branching Ratios for the Decays J/ψ→γπ⁰,γη, γη'→ 3γ at BES

BES Collaboration

Institute of High Energy Physics, The Chinese Academy of Scinces, Beijing 100039

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1997-05-05

Abstract: Decays of the J/ψ resonance into the final states with three photons are investigated.Branching ratios for the decays of J/ψ→γπ⁰ and J/ψ→γη'are determined to be Br (J/ψ→γπ⁰)=(4.6±1.1)×10^－5 and. Br(J/ψ→γη')＝(4.12±0.82)×10^－3. The ratio of the two decay rates,(J/ψ→γη')/(J/ψ→γη),is 4.79±0.85. Within experimental errors, this value agrees well with the predictions of two theoretical models'.