Measurement of J/ψ Resonance Parameters

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> 1995, Vol. 19> Issue(8) : 673-685

Measurement of J/ψ Resonance Parameters

BES Collaboration

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

Abstract
HTML
Reference
Related

PDF

Abstract：
The cross sections of e⁺e^－→hadrons,e⁺e^－,μ⁺μ^－have been measured in the vicinity of J/ψresonance at BES/BEPC.The fit of the observed cross sections gives the new results of J/ψ resonance parameters:the partial widths to hadrons,electrons and muous are Γh=74.1±8.1keV,Γe= 5.14±0.39keV and Γμ=5.13±0.52keV respectively;the total width Γ=84.4±8.9keV;the branching fractions Γh/Γ=(87.8±0.5)%,Γe/Γ=(6.09± 0.33)%,and Γμ/Γ=(6.08±0.33) %.

References

[1]

J.J.Aubert et al,Phys.Rev.Lett.33（1974）1404;J.E.Augustin et al,Phys.Rev.Lett,33（1974）1406.[2] M.Boyaski et al,Phys.Rev.Lett.,34（1975）1357.[3] R.BaldiniCelio et al,Phys.Lett.,58B（1975）471.[4] B.Esposito et al,Lett.NuovoCim,14（1975）73.[5] K.Brandelik et al,Z.Phys,Cl（1979）233.[6] Particle Data Group,Review of Particle Properties,Phys.Lett.,B239（1990）1[7] D.Coffman et al,Phys.Rev.Lett.68（1992）282.[8] P.A.Amstrong et al,Phys.Rev.,D47（1993）772.[9] Particle Data GroupReview of Particle Properties,Phys.Rev,D50（1994）1173.[10] J.Z.Bai et al,Nucl.Inst.Meth.,A344（1990）319;白景芝等，高能物理与核物理，16（199）769.[11] D.H.Ma et al,Absolute energy alibration and dermination of beamenergy spread for BEPC,BES internal report,Jun,14,1992.[12] 倪蕙苓等，高能物理与核物理，13（1989）870.朱永生等，高能物理与核物理，18（1994）503.[13] F.A.Berendsetal.,Nucl.Phys.,B228（983）537;Nucl.Phys,B177（1981）237;Nucl.Phys,B57C1973）381.[14] J.W.Zhang,The calculation of trigger efficiency for e+e– and mu+mu- eventsin BES,BES internal report,Jan,18,1993.[15] 过雅南等，高能物理与核物理，14（1990）1057[16] T.Sjostrand,CERN–TH,6488/92.[17] 苑长征，由道测量轻子.由φ（2S）→π+π-J/φ道测量J/φ轻子道衰变要支比，中国科学院高能物理研究所，硕士论文，1993年.

[1]	LIANG Jun , MA Zhong-Yu . Giant Monopole Resonance and Symmetry Energy. Chinese Physics C, 2007, 31(5): 470-474.
[2]	LI Jin , LI Jian-Ping , TANG Yue-Li , LIU Shu-Dong , AN Li-Sheng , LI Tie-Hui , SHAO Bei-Bei . Measurement for Radiation Background of BES Detector. Chinese Physics C, 2003, 27(3): 183-188.
[3]	WANG Wen-Feng , ZHU Yong-Sheng , ZHANG Xue-Yao . Efficiency Correction in the Branching Fraction Determination of ψ′Hadronic Decays. Chinese Physics C, 2003, 27(2): 89-94.
[4]	LIU Xi-Ming , ZHANG Xue-Yao , WANG Hai-Long , WANG Yu-Shui . Fragmentation Character of Resonance Events in BEPC e⁺e^－ Annihilation. Chinese Physics C, 2002, 26(6): 557-562.
[5]	WEN Wan-Xin , JIN Gen-Ming . Numerical Simulations on Efficiency and Measurement of Capabilities of BGO Detectors for High Energy γ Ray. Chinese Physics C, 2002, 26(11): 1178-1183.
[6]	BES Collaboration . Branching Ratios of J/ψ→π⁰3(π⁺π^－). Chinese Physics C, 2002, 26(1): 8-16.
[7]	CHEN YinBao , HUANG ZhiBin . Resonance, Chaos and Halo Formation in Space Charge Dominated Beams. Chinese Physics C, 2000, 24(6): 560-566.
[8]	BES Collaborator . Measurement of Michel Parameter in τ Decay. Chinese Physics C, 1998, 22(11): 961-968.
[9]	Wen Wanxin , Zhong Jiquan , Jin Genming . Relaxation of Isoscalar Giant Monopole Resonance. Chinese Physics C, 1996, 20(6): 546-553.
[10]	Huang Wenxue , Xu Xiaoji , Hu Zhiqiang , Ma Ruichang . First Experimental Determination of Half-Life for New Nuclide ⁶⁵Se. Chinese Physics C, 1996, 20(2): 113-118.
[11]	XU Shuwei , PAN Qiangyan , ZHANG Tianmei , YUAN Shuanggui , ZHANG Xueqian , SHI Shuanghui , TIAN Jiaqi , HUANG Wenda . Experimental Measurements for the Q_EC-Value of ¹⁸³Os-Decay. Chinese Physics C, 1993, 17(11): 985-987.
[12]	Bruce H , WU Dan-Di , . Is There a New Parameter in QED. Chinese Physics C, 1991, 15(10): 956-960.
[13]	FENG Jun , SHEN Wen-Qing , WANG Bing , ZHU Yong-Tai , FENG En-Pu . PARAMETRIZED CALCULATION OF NUCLEAR TOTAL REACTION CROSS SECTION. Chinese Physics C, 1989, 13(5): 459-464.
[14]	XIA Ke-Ding , CAI Yan-Huang . MULTIPOLE GLANT RESONANCES IN HIGHLY EXCITED NUCLEI. Chinese Physics C, 1989, 13(1): 56-61.
[15]	YUAN Shuang-Gui , ZHANG Tian-Mei , XU Shu-Wei , LI Wen-Xin , ZHANG Li , LIU Man-Qing , QU Xiu-Lan , LI Wei-Sheng . THE DETERMINATION OF ENDPOINT ENERGY FOR ²³⁵Th β-DECAY. Chinese Physics C, 1988, 12(5): 712-714.
[16]	XIONG Liang-Yue(L.Y.Xiong) . THE ACCURATE DETERMINATION OF SMALL VARIATIONS FOR THE PARAMETERS OF POSITRON LIFETIME SPECTRA IN AMORPHOUS ALLOY. Chinese Physics C, 1986, 10(5): 513-518.
[17]	MA Hui-Fang , YANG Zhen-Guo , GE Lin-Xiao . MEASUREMENT OF ISOMERIC CROSS-SECTION RATIO. Chinese Physics C, 1983, 7(5): 639-642.
[18]	TANG E-SHENG , LI JIAN-PING . DETERMINATION OF THE NEUTRON ATTENUATION LENGTH λ IN CONCRETE SHIELDING. Chinese Physics C, 1982, 6(5): 529-535.
[19]	LI JIAN-PING , CHANG WUI-KE , XIE YAN-FONG , TANG JIN-HUA , TANG E-SHENG . MEASUREMENT OF NATURAL BACKGROUND NEUTRON. Chinese Physics C, 1982, 6(6): 665-670.
[20]	LI TI-PEI . CONFIDENCE DENSITY METHOD FOR PARAMETER ESTIMATION. Chinese Physics C, 1978, 2(2): 131-142.

Access

Get Citation

BES Collaboration. Measurement of J/ψ Resonance Parameters[J]. Chinese Physics C, 1995, 19(8): 673-685.

BES Collaboration. Measurement of J/ψ Resonance Parameters[J]. Chinese Physics C, 1995, 19(8): 673-685. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

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

Article Metric

Article Views(2483)
PDF Downloads(522)
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

Measurement of J/ψ Resonance Parameters

BES Collaboration

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

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1995-08-05

Abstract: The cross sections of e⁺e^－→hadrons,e⁺e^－,μ⁺μ^－have been measured in the vicinity of J/ψresonance at BES/BEPC.The fit of the observed cross sections gives the new results of J/ψ resonance parameters:the partial widths to hadrons,electrons and muous are Γh=74.1±8.1keV,Γe= 5.14±0.39keV and Γμ=5.13±0.52keV respectively;the total width Γ=84.4±8.9keV;the branching fractions Γh/Γ=(87.8±0.5)%,Γe/Γ=(6.09± 0.33)%,and Γμ/Γ=(6.08±0.33) %.