Measurement of Double Charmonium Production in $e^+e^-$ Annihilations at $\sqrt{s}=10.6$ GeV

B. Aubert; et al; The BABAR Collaboration

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Measurement of Double Charmonium Production in $e^+e^-$ Annihilations at $\sqrt{s}=10.6$ GeV

The BABAR Collaboration, B. Aubert, et al

High Energy Physics - Experiment · Submitted 24 Jun 2005

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim We observe signals for $\eta_c(1S)$, $\chi_{c0}$, and $\eta_c(2S)$ in the recoil mass distribution, thus confirming previous measurements.

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arXiv IDhep-ex/0506062 (version 3)

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CitationB. Aubert, et al, The BABAR Collaboration. "Measurement of Double Charmonium Production in $e^+e^-$ Annihilations at $\sqrt{s}=10.6$ GeV." arXiv:hep-ex/0506062 (2005). https://pith.science/paper/V4E4P7QF

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We study $e^+e^-\to J/\psi c\bar{c}$ by measuring the invariant mass distribution recoiling against fully reconstructed $J/\psi$ decays, using 124 fb$^{-1}$ of data collected with a center-of-mass energy of 10.6 GeV with the $BaBar$ detector. We observe signals for $\eta_c(1S)$, $\chi_{c0}$, and $\eta_c(2S)$ in the recoil mass distribution, thus confirming previous measurements. We measure $\sigma(e^+e^-\to J/\psi+c\bar{c}) {\cal B} (c\bar{c} \to >2 \mathrm{charged})$ to be $17.6\pm2.8\textrm{(stat)}^{+1.5}_{-2.1}\textrm{(syst)}$ fb, $10.3\pm2.5\textrm{(stat)}^{+1.4}_{-1.8}\textrm{(syst)}$ fb, and $16.4\pm3.7\textrm{(stat)}^{+2.4}_{-3.0}\textrm{(syst)}$ fb with $c\bar{c}=\eta_c(1S)$, $\chi_{c0}$, and $\eta_c(2S)$, respectively.

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#	sentence	role	the authors' own work	states the main conclusion	strength
s0	We study $e^+e^-\to J/\psi c\bar{c}$ by measuring the invariant mass distribution recoiling against fully reconstructed $J/\psi$ decays, using 124 fb$^{-1}$ of data collected with a center-of-mass energy of 10.6 GeV with the $BaBar$ detector.	method 0.81	0.97	0.04	asserted 0.97
s1	We observe signals for $\eta_c(1S)$, $\chi_{c0}$, and $\eta_c(2S)$ in the recoil mass distribution, thus confirming previous measurements.	result 0.97	0.90	0.24	asserted 1.00
s2	We measure $\sigma(e^+e^-\to J/\psi+c\bar{c}) {\cal B} (c\bar{c} \to >2 \mathrm{charged})$ to be $17.6\pm2.8\textrm{(stat)}^{+1.5}_{-2.1}\textrm{(syst)}$ fb, $10.3\pm2.5\textrm{(stat)}^{+1.4}_{-1.8}\textrm{(syst)}$ fb, and $16.4\pm3.7\textrm{(stat)}^{+2.4}_{-3.0}\textrm{(syst)}$ fb with $c\bar{c}=\eta_c(1S)$, $\chi_{c0}$, and $\eta_c(2S)$, respectively.	result 1.00	0.97	0.64	asserted 1.00

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The paper

Original abstract

We study $e^+e^-\to J/\psi c\bar{c}$ by measuring the invariant mass distribution recoiling against fully reconstructed $J/\psi$ decays, using 124 fb$^{-1}$ of data collected with a center-of-mass energy of 10.6 GeV with the $BaBar$ detector. We observe signals for $\eta_c(1S)$, $\chi_{c0}$, and $\eta_c(2S)$ in the recoil mass distribution, thus confirming previous measurements. We measure $\sigma(e^+e^-\to J/\psi+c\bar{c}) {\cal B} (c\bar{c} \to >2 \mathrm{charged})$ to be $17.6\pm2.8\textrm{(stat)}^{+1.5}_{-2.1}\textrm{(syst)}$ fb, $10.3\pm2.5\textrm{(stat)}^{+1.4}_{-1.8}\textrm{(syst)}$ fb, and $16.4\pm3.7\textrm{(stat)}^{+2.4}_{-3.0}\textrm{(syst)}$ fb with $c\bar{c}=\eta_c(1S)$, $\chi_{c0}$, and $\eta_c(2S)$, respectively.

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References

Forward citations

Cited by 8 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

Analytical two-loop amplitudes of $e^{+} e^{-} \longrightarrow \boldsymbol{J} / \boldsymbol{\psi}+\boldsymbol{\eta}_c$ at $B$ factories
hep-ph 2025-08 conditional novelty 7.0 of 10

The authors present the first analytical two-loop NRQCD amplitude for e+e- to J/psi+eta_c as an expansion in m_c^2/s, with cross-section predictions consistent (within uncertainties) with B-factory data.
Revisiting relativistic corrections to inclusive $J/\psi$ production at B factories: Complete expansion for three-body quarkonium production
hep-ph 2026-07 conditional novelty 6.0 of 10

Full final-state kinematic expansion yields scheme-independent O(v²) corrections of about −14.6% (cc̄) and +12% (non-cc̄) for inclusive J/ψ at B factories, yet tension with Belle data remains.
Exclusive production of doubly charmed baryon pair at B Factories
hep-ph 2026-10 reject novelty 5.0 of 10

The paper reports a leading-order NRQCD estimate of roughly 3 fb for exclusive Xi_cc + anti-Xi_cc production at B-factory energies and concludes the channel is unobservable at Belle II and BaBar.
Reanalysis of exclusive charmonium production at the $B$ factories
hep-ph 2026-09 accept novelty 5.0 of 10

Amplitude-level truncation of NNLO QCD corrections yields better perturbative convergence and reduced scale dependence for eight exclusive charmonium production processes at B factories.
Exclusive production of P-wave charmonia through two virtual photons in electron-positron annihilation
hep-ph 2026-07 conditional novelty 5.0 of 10

BSE-CIA calculations give LO cross sections of order 10^{-3} fb for e+e- → χ_c1+η_c and h_c+h_c at 10.6 GeV, with a wave-function-driven hierarchy and power-law falloff.

Show 3 more citing papers

Soft Contributions Stabilize NNLO QCD Corrections to Quarkonium Production and Decay
hep-ph 2026-06 unverdicted novelty 5.0 of 10

Soft contributions stabilize NNLO QCD corrections for S-wave color-singlet quarkonium processes, yielding better perturbative convergence and experimental agreement.
Inclusive $\Upsilon(1S,2S,3S)$ photoproduction at the CEPC
hep-ph 2020-09 conditional novelty 5.0 of 10

Inclusive Upsilon(1S,2S,3S) photoproduction at the CEPC is predicted to yield tens of thousands of events per year, with the rapidity distribution best separating color-octet from color-singlet NRQCD production.
The process $\epem\to J/ \psi X(3940)$ at $\sqrt s = 10.6$ GeV in the framework of light cone formalism
hep-ph 2006-02 conditional novelty 5.0 of 10

The light cone formalism predicts sigma(e+e- to J/psi X(3940)) of about 11 +/- 3 fb if X(3940) is the 3^1S0 charmonium state, matching Belle's measured 10.6 +/- 2.5 +/- 2.4 fb.

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44 arXiv papers cite this in 58 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 36 sentences without a confident label

Uses its data or values 9 papers

Later in the year 2005, another independent measurement was finished by BABAR [ref] , and the total cross section is $σ[J/ψ+η_c] ×B^η_c[≥2] = (17.6±2.8^+1.5_-2.1) fb$.

Next-to-next-to-leading-order QCD corrections to $J/\psi$ plus $\eta_c$ production at the $B$ factories · Introduction · 0.97
The BABAR Collaboration has also measured this quantity, and obtains $σ[e^+e^-→J/ψ+η_c]×B_> 2=17.6±2.8±2.1 fb$ (Ref. [ref] ).

Resummation of Relativistic Corrections to e+ e- -> J/psi+eta_c · Introduction · 0.89
Later the Belle Collaboration updated the value as $25.6±2.8±3.4$ fb [ref] and the BABAR Collaboration also reported a large cross section of $17.6±2.8±2.1$ fb [ref] , where the values include the branching fraction of the system recoiling against the $J/ψ$ into two or more charged tracks.

Recent Developments in Heavy-Quarkonium Phenomenology · Relativistic corrections to quarkonium processes · 0.98

Compares with it 1 paper

We find the theoretical value of $σ[e^+e^-⟶J/Ψη_c]=21.75fb$, which is broadly in agreement with the Babar's data $σ[e^+e^-⟶J/Ψη_c]=(17.6±2.8±2.1)fb$ [ref] and the Belle's data, $σ[e^+e^-⟶J/Ψη_c]=(25.6±2.8±3.4)fb$ [ref] .

Cross section for double charmonium production in electron-positron annihilation at energy $\sqrt{s}$= 10.6 GeV · Discussion · 0.93

Cites it as support 2 papers

For example, in the case of double charmonia production at B-factories Belle and BaBar there is about an order of magnitude difference between LC and NRQCD results and only LC solves the long standing contradiction between theory and experiment [ref]

Charmonia Production in $W\to (c\bar{c}) D_{s}^{(*)}$ Decays · Introduction · 0.96
Recently, however, an attempts were made to use it also for heavy quarkonia production at B-factories Belle and BaBar at $√(s_ee)=10.6$ GeV (see [ref] ) and agreement between obtained theoretical predictions and experimental data shows us that light-cone formalism can be used also to describe reactions with heavy quarkonium mesons.

Double Charmonia Production in Exclusive $Z$ Boson Decays · Light Cone Expansion · 0.96

Cites it as background 9 papers

The measurements of the cross section for exclusive $J/ψ+η_c$ production from $e^+e^-$ annihilation carried out by the Belle [ref] and BABAR [ref] collaborations have triggered rapid progress in the heavy-quarkonium theory based on the nonrelativistic QCD (NRQCD) factorization approach [ref] .

Exclusive heavy quarkonium + gamma production from e+ e- annihilation into a virtual photon · Introduction · 0.81
Over the past decades, the research on double charmonium at various high-energy colliders has been made considerable progress both experimentally and theoretically [ref] .

Next-to-leading-order QCD correction to the exclusive double charmonium production via $Z$ decays · Introduction · 0.99
The benchmark processes, exemplified by $e^+e^-→J/ψ+H$, with $H=η_c, χ_c0,1,2,…$ representing a $C$-even charmonium that recoils against $J/ψ$, are first observed at two $B$ factories in the beginning of this century [ref] .

${\mathcal O}(\alpha_s^2)$ corrections to $J/\psi+\chi_{c0,1,2}$ production at $B$ factories · Introduction · 0.81

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