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

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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

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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

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Received: 2010-02-05
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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.

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Measurement of J/ψ leptonic width with the KEDR detector

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