Measurement of J/ψ leptonic width with the KEDR detector

A. G. Shamov (KEDR collaboration)

doi:10.1088/1674-1137/34/6/036

Chinese Physics C> 2010, Vol. 34> Issue(6) : 836-841 DOI: 10.1088/1674-1137/34/6/036

Measurement of J/ψ leptonic width with the KEDR detector

A. G. Shamov (KEDR collaboration)

Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia

Abstract
HTML
Reference
Related

PDF

Abstract：
We report a new precise determination of the leptonic widths of the J/psi meson performed with the KEDR detector at the VEPP-4M e⁺e^－ collider. The measured values of the J/psi parameters are: Γ_ee×Γ_ee/Γ=0.3323±0.0064 (stat.)±0.0048(syst.) keV, Γ_ee×Γ_μμ/Γ=0.3318±0.0052 (stat.)±0.0063 (syst.) keV. Assuming eμ universality and using the table value of the branching ratios the leptonic Γ_ll=5.59±0.12 keV width and the total Γ=94.1±2.7 keV widths were obtained. We also discuss in detail a method to calculate radiative corrections at a narrow resonance.

References

[1]

. Badalian A M, Danilkin I V. arXiv: 0801.16142. Lakhina O, Swanson E S. Physical Review D, 2006, 74:0140123. Dudek J J, Edwards R G, Richards D G. Physical ReviewD, 2006, 73: 0745074. Brambilla N et al. Heavy quarkonium physics, 2005, arXiv:hep-ph/04121585. Aubert B et al (BABAR collaboration). Physical ReviewD, 2004, 69: 0111036. Adams G S et al (CLEO collaboration). Physical ReviewD, 2006, 73: 0511037. Anashin V V et al (KEDR collaboration). Nucl. Phys. Proc.Suppl., 2008, 181-182: 3538. Tsai Y S. Presented at Asia Paci c Physics Conf., Singa-pore, Jun 12-18, 19839. Kuraev E A, Fadin V S. Sov. J. Nucl. Phys., 1985, 41: 46610. Asimov Y I et al. Pisma Zh. Eksp. Teor. Fiz., 1975, 21:378. [Asimov Ya I et al. JETP Lett., 1975, 21: 172]11. Todyshev K Y. arXiv:0902.410012. Beenakker W, Berends F A, van der Marck S C. Nucl. Phys.B, 1991, 349: 32313. Arbuzov A B et al. JHEP, 1997, 9710: 00114. Jadach S, P laczek W, Ward B F L. Phys. Lett. B, 1997,390: 29815. Arbuzov A B et al. Eur. Phys. J. C, 2006, C46: 68916. Anashin V et al. Stockholm 1998, EPAC 98* , 400. Pre-pared for 6th European Particle Accelerator Conference(EPAC 98). Stockholm, Sweden, 22-26 Jun 1998.17. Bukin A D et al. IYF-75-6418. Skrinsky A N, Shatunov Y M. Sov. Phys. Usp., 1989, 32:54819. Artamonov A S et al. Phys. Lett. B, 2000, 474: 42720. V. M. Aulchenko V M et al (KEDR collaboration). Phys.Lett. B, 2003, 573: 63; arXiv: hep-ex/030605021. Klein R et al. Nucl. Instrum. Meth. A, 1997, 384: 29322. Klein R et al. Nucl. Instrum. Meth. A, 486: 54523. Anashin V V et al. Nucl. Instrum. Meth. A, 2002, 478: 42024. Anashin V V et al (KEDR collabotaion). arXiv:0912.1082,to be published in Phys. Lett. B25. Amsler C et al (Particle Data Group). Phys. Lett. B, 2008,667: 1

[1]	V. Yu. Denisov;O. A. Belyanovska;V. P. Khomenkov;I. Yu. Sedykh;K. M. Sukhyy . A simple description of the temperature dependence of the width of the fission-fragment mass yield in $\bf^{197}$Au and $\bf^{209}$Bi at intermediate energies. Chinese Physics C, 2019, df87c41e-622f-49a7-b081-5c584df157aa(11): 14101-.
[2]	Wen Chen;Feng Feng;Yu Jia;Wen-Long Sang . Mixed electroweak-QCD corrections to ${e^+e^-\to \mu^+\mu^- H}$ at CEPC with finite-width effect. Chinese Physics C, 2019, df87c41e-622f-49a7-b081-5c584df157aa(11): 13108-.
[3]	Zong-guo Si , Xing-hua Yang , Shun Zhou . Broken S_3L×S_3R flavor symmetry and leptonic CP violation. Chinese Physics C, 2017, 41(11): 113105. doi: 10.1088/1674-1137/41/11/113105
[4]	Xing-Dao Guo , Xi-Qing Hao , Hong-Wei Ke , Ming-Gang Zhao , Xue-Qian Li . Looking for new physics via semi-leptonic and leptonic rare decays of D and D_s. Chinese Physics C, 2017, 41(9): 093107. doi: 10.1088/1674-1137/41/9/093107
[5]	Qing-Hao Chen , Qian Yue , Jian-Ping Cheng , Ke-Jun Kang , Yuan-Jing Li , Shin-Ted Lin , Chang-Jian Tang , Hao-Yang Xing , Xun-Zhen Yu , Ming Zeng , Jing-Jun Zhu . Measurement of photoelectron yield of the CDEX-10 liquid argon detector prototype. Chinese Physics C, 2016, 40(11): 116002. doi: 10.1088/1674-1137/40/11/116002
[6]	Hao Jiang , Qian Yue , Yu-Lan Li , Ke-Jun Kang , Yuan-Jing Li , Jin Li , Shin-Ted Lin , Shu-Kui Liu , Hao Ma , Jing-Lu Ma , Jian Su , Henry Tsz-King Wong , Li-Tao Yang , Wei Zhao , Zhi Zeng . Measurement of the dead layer thickness in a p-type point contact germanium detector. Chinese Physics C, 2016, 40(9): 096001. doi: 10.1088/1674-1137/40/9/096001
[7]	Ying Chen , Wei-Feng Chiu , Ming Gong , Long-Cheng Gui , Zhao-Feng Liu . Exotic vector charmonium and its leptonic decay width. Chinese Physics C, 2016, 40(8): 081002. doi: 10.1088/1674-1137/40/8/081002
[8]	ZHANG Fei , FAN Rui-Rui , PENG Wen-Xi , DONG Yi-Fan , GONG Ke , LIANG Xiao-Hua , LIU Ya-Qing , WANG Huan-Yu . A prototype silicon detector system for space cosmic-ray charge measurement. Chinese Physics C, 2014, 38(6): 066101. doi: 10.1088/1674-1137/38/6/066101
[9]	LIU Li , YU Hai , ZHENG Wei . Measurement of X-ray photon energy and arrival time using a silicon drift detector. Chinese Physics C, 2014, 38(3): 036003. doi: 10.1088/1674-1137/38/3/036003
[10]	XING Zhi-Zhong . Implications of the Daya Bay observation of θ₁₃ on the leptonic avor mixing structure and CP violation. Chinese Physics C, 2012, 36(4): 281-297. doi: 10.1088/1674-1137/36/4/L01
[11]	LIAO Yan-Fei , ZHANG Zhi-Ming , LI Dao-Wu , SHUAI Lei , SHAN Bao-Ci , HUANG Xian-Chao , LIU Jun-Hui , CHEN Yan , WANG Ying-Jie , LIU Shuang-Quan , WANG Pei-Lin , WEI Shu-Jun , WEI Long . Preliminary study of depth of interaction measurement for a PET detector. Chinese Physics C, 2011, 35(11): 1070-1073. doi: 10.1088/1674-1137/35/11/017
[12]	FAN Rui-Rui , HOU Feng-Jie , OUYANG Qun , CHEN Yuan-Bo , YI Fu-Ting , XIE Yi-Gang , DONG Jing . Study of bulk micromegas detector. Chinese Physics C, 2010, 34(10): 1636-1638. doi: 10.1088/1674-1137/34/10/016
[13]	XIE Zhen-Xing , FENG Guan-Qiu , GUO Xin-Heng . Radiative leptonic decay B^－_c→τ^－ν_τγ in the standard model and the two-Higgs-doublet model. Chinese Physics C, 2010, 34(10): 1570-1575. doi: 10.1088/1674-1137/34/10/004
[14]	K. B. Vijaya Kumar , Antony Prakash Monteiro . Light meson spectrum and their leptonic decay widths in the frame work of constituent quark models. Chinese Physics C, 2010, 34(9): 1396-1398. doi: 10.1088/1674-1137/34/9/052
[15]	Stefan E. Müller (KLOE collaboration) . Measurement of the pion form factor for M²_ππ between 0.1 and 0.85 GeV² with the KLOE detector. Chinese Physics C, 2010, 34(6): 686-691. doi: 10.1088/1674-1137/34/6/013
[16]	LI Shu-Wei , KANG Ke-Jun , WANG Yi , LI Jin , LI Yuan-Jing , ZHANG Qing-Jun . Employing a Cerenkov detector for the thickness measurement of X-rays in a scattering background. Chinese Physics C, 2010, 34(12): 1895-1899.
[17]	et al . Measurement of J/ψ→η_cγ at KEDR. Chinese Physics C, 2010, 34(6): 831-835. doi: 10.1088/1674-1137/34/6/035
[18]	V. M. Aulchenko , E. M. Baldin , A. K. Barladyan . Recent results from the KEDR detector. Chinese Physics C, 2010, 34(6): 650-655. doi: 10.1088/1674-1137/34/6/007
[19]	LI Xiu-Rong , YUAN Chang-Zheng . Study of K^*(892) mass and width splitting caused by model difference. Chinese Physics C, 2009, 33(5): 321-326. doi: 10.1088/1674-1137/33/5/001
[20]	MENG Xiang-Wei . Feasibility study for the measurement of B_c meson mass and lifetime with the general purpose detector at the LHC. Chinese Physics C, 2008, 32(2): 83-87. doi: 10.1088/1674-1137/32/2/001

Access

Get Citation

A. G. Shamov (KEDR collaboration). Measurement of J/ψ leptonic width with the KEDR detector[J]. Chinese Physics C, 2010, 34(6): 836-841. doi: 10.1088/1674-1137/34/6/036

A. G. Shamov (KEDR collaboration). Measurement of J/ψ leptonic width with the KEDR detector[J]. Chinese Physics C, 2010, 34(6): 836-841. doi: 10.1088/1674-1137/34/6/036 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2010-02-05
Revised: 1900-01-01

Article Metric

Article Views(1315)
PDF Downloads(439)
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 leptonic width with the KEDR detector

Budker Institute of Nuclear Physics, 11, Lavrentiev prospect, Novosibirsk, 630090, Russia

Received Date: 2010-02-05

Accepted Date: 1900-01-01

Available Online: 2010-06-05

Abstract:

We report a new precise determination of the leptonic widths of the J/psi meson performed with the KEDR detector at the VEPP-4M e⁺e^－ collider. The measured values of the J/psi parameters are: Γ_ee×Γ_ee/Γ=0.3323±0.0064 (stat.)±0.0048(syst.) keV, Γ_ee×Γ_μμ/Γ=0.3318±0.0052 (stat.)±0.0063 (syst.) keV. Assuming eμ universality and using the table value of the branching ratios the leptonic Γ_ll=5.59±0.12 keV width and the total Γ=94.1±2.7 keV widths were obtained. We also discuss in detail a method to calculate radiative corrections at a narrow resonance.

HTML

Reference (1)

Measurement of J/ψ leptonic width with the KEDR detector

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Measurement of J/ψ leptonic width with the KEDR detector

HTML

目录