Measurement of the leptonic decay width of J/ψ using initial state radiation

M. Ablikim; M. N. Achasov; X. C. Ai; O.  Albayrak; M. Albrecht; D. J. Ambrose; A. Amoroso; Z. Haddadi; N. Kalantar-Nayestanaki; M. Kavatsyuk; H. Löhner; J. G. Messchendorp; M. Tiemens; BESIII Collaboration

doi:10.1016/j.physletb.2016.08.011

Measurement of the leptonic decay width of J/ψ using initial state radiation

M. Ablikim, M. N. Achasov, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, A. Amoroso, Z. Haddadi, N. Kalantar-Nayestanaki, M. Kavatsyuk, H. Löhner, J. G. Messchendorp, M. Tiemens, BESIII Collaboration

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Abstract

Using a data set of 2.93 fb⁻¹ taken at a center-of-mass energy of √s = 3.773 GeVwith the BESIII detector at the BEPCII collider, we measure the process e⁺e⁻ → J/ψγ →μ⁺μ⁻γ and determine the product of the branching fraction and the electronic width B_μμ · Γ_ee = (333.4 ± 2.5_stat ± 4.4_sys) eV. Using the earlier-published BESIII result for B_μμ = (5.973 ± 0.007_stat ± 0.037_sys)%, we derive the J/ψ electronic width Γ_ee = (5.58 ±0.05_stat ±0.08_sys) keV.

Original language	English
Pages (from-to)	98-103
Number of pages	6
Journal	Physics Letters B
Volume	761
DOIs	https://doi.org/10.1016/j.physletb.2016.08.011
Publication status	Published - 10-Oct-2016

Keywords

CROSS-SECTION
FINAL-STATES
E(+)E(-) COLLISIONS
Initial state radiation
BESIII
J/psi resonance
Electronic width

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Ablikim, M., Achasov, M. N., Ai, X. C., Albayrak, O., Albrecht, M., Ambrose, D. J., Amoroso, A., Haddadi, Z., Kalantar-Nayestanaki, N., Kavatsyuk, M., Löhner, H., Messchendorp, J. G., Tiemens, M., & BESIII Collaboration (2016). Measurement of the leptonic decay width of J/ψ using initial state radiation. Physics Letters B, 761, 98-103. https://doi.org/10.1016/j.physletb.2016.08.011

@article{e9bbfd684daa43deaf0e113b7c63cb32,

title = "Measurement of the leptonic decay width of J/ψ using initial state radiation",

abstract = "Using a data set of 2.93 fb−1 taken at a center-of-mass energy of √s = 3.773 GeVwith the BESIII detector at the BEPCII collider, we measure the process e+e− → J/ψγ →μ+μ−γ and determine the product of the branching fraction and the electronic width Bμμ · Γee = (333.4 ± 2.5stat ± 4.4sys) eV. Using the earlier-published BESIII result for Bμμ = (5.973 ± 0.007stat ± 0.037sys)%, we derive the J/ψ electronic width Γee = (5.58 ±0.05stat ±0.08sys) keV. ",

keywords = "CROSS-SECTION, FINAL-STATES, E(+)E(-) COLLISIONS, Initial state radiation, BESIII, J/psi resonance, Electronic width",

author = "M. Ablikim and Achasov, {M. N.} and Ai, {X. C.} and O. Albayrak and M. Albrecht and Ambrose, {D. J.} and A. Amoroso and Z. Haddadi and N. Kalantar-Nayestanaki and M. Kavatsyuk and H. L{\"o}hner and Messchendorp, {J. G.} and M. Tiemens and {BESIII Collaboration}",

year = "2016",

month = oct,

day = "10",

doi = "10.1016/j.physletb.2016.08.011",

language = "English",

volume = "761",

pages = "98--103",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "ELSEVIER SCIENCE BV",

}

Ablikim, M, Achasov, MN, Ai, XC, Albayrak, O, Albrecht, M, Ambrose, DJ, Amoroso, A, Haddadi, Z, Kalantar-Nayestanaki, N , Kavatsyuk, M, Löhner, H, Messchendorp, JG, Tiemens, M & BESIII Collaboration 2016, 'Measurement of the leptonic decay width of J/ψ using initial state radiation', Physics Letters B, vol. 761, pp. 98-103. https://doi.org/10.1016/j.physletb.2016.08.011

TY - JOUR

T1 - Measurement of the leptonic decay width of J/ψ using initial state radiation

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Ai, X. C.

AU - Albayrak, O.

AU - Albrecht, M.

AU - Ambrose, D. J.

AU - Amoroso, A.

AU - Haddadi, Z.

AU - Kalantar-Nayestanaki, N.

AU - Kavatsyuk, M.

AU - Löhner, H.

AU - Messchendorp, J. G.

AU - Tiemens, M.

AU - BESIII Collaboration

PY - 2016/10/10

Y1 - 2016/10/10

N2 - Using a data set of 2.93 fb−1 taken at a center-of-mass energy of √s = 3.773 GeVwith the BESIII detector at the BEPCII collider, we measure the process e+e− → J/ψγ →μ+μ−γ and determine the product of the branching fraction and the electronic width Bμμ · Γee = (333.4 ± 2.5stat ± 4.4sys) eV. Using the earlier-published BESIII result for Bμμ = (5.973 ± 0.007stat ± 0.037sys)%, we derive the J/ψ electronic width Γee = (5.58 ±0.05stat ±0.08sys) keV.

AB - Using a data set of 2.93 fb−1 taken at a center-of-mass energy of √s = 3.773 GeVwith the BESIII detector at the BEPCII collider, we measure the process e+e− → J/ψγ →μ+μ−γ and determine the product of the branching fraction and the electronic width Bμμ · Γee = (333.4 ± 2.5stat ± 4.4sys) eV. Using the earlier-published BESIII result for Bμμ = (5.973 ± 0.007stat ± 0.037sys)%, we derive the J/ψ electronic width Γee = (5.58 ±0.05stat ±0.08sys) keV.

KW - CROSS-SECTION

KW - FINAL-STATES

KW - E(+)E(-) COLLISIONS

KW - Initial state radiation

KW - BESIII

KW - J/psi resonance

KW - Electronic width

U2 - 10.1016/j.physletb.2016.08.011

DO - 10.1016/j.physletb.2016.08.011

M3 - Article

SN - 0370-2693

VL - 761

SP - 98

EP - 103

JO - Physics Letters B

JF - Physics Letters B

ER -

Measurement of the leptonic decay width of J/ψ using initial state radiation

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