Measurement of the $e^{+}{e}^{-}\to \eta J/\psi$ cross section and search for $e^{+}{e}^{-}\to {\pi }^{0}J/\psi$ at center-of-mass energies between 3.810 and 4.600~GeV

Abstract

Using data samples collected with the BESIII detector operating at the BEPCII collider at center-of-mass energies from 3.810 to 4.600 GeV, we perform a study of $e^{+}{e}^{-}\to \eta J/\psi$ and ${\pi }^{0}J/\psi$. Statistically significant signals of $e^{+}{e}^{-}\to \eta J/\psi$ are observed at $\sqrt{s}$ = 4.190, 4.210, 4.220, 4.230, 4.245, 4.260, 4.360 and 4.420 GeV, while no signals of $e^{+}{e}^{-}\to {\pi }^{0}J/\psi$ are observed. The measured energy-dependent Born cross section for $e^{+}{e}^{-}\to \eta J/\psi$ shows an enhancement around 4.2~GeV. The measurement is compatible with an earlier measurement by Belle, but with a significantly improved precision.

References in corpus (47)

• Design and Construction of the BESIII Detector
• The Precision Monte Carlo Event Generator KK For Two-Fermion Final States In e+e- Collisions
• Observation of a charged charmoniumlike structure in e+e- to pi+pi-J/psi at \sqrt{s}=4.26 GeV
• Coherent Exclusive Exponentiation For Precision Monte Carlo Calculations
• Higher Charmonia
• Observation of a Broad Structure in the ${\pi }^{+}{\pi }^{-}J/\psi$ Mass Spectrum around 4.26 GeV/$c^2$
• Study of $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}J/\psi$ and Observation of a Charged Charmonium-like State at Belle
• Limits and Confidence Intervals in the Presence of Nuisance Parameters
• Observation of a charged charmoniumlike structure Z_c(4020) and search for the Z_c(3900) in e+e- to pi+pi-h_c
• Observation of Two Resonant Structures in e+e- to pi+ pi- psi(2S) via Initial State Radiation at Belle
• Measurement of e^+e^- to pi^+pi^-J/psi Cross Section via Initial State Radiation at Belle
• Quest for precision in hadronic cross sections at low energy: Monte Carlo tools vs. experimental data
• Observation of the Charged Hadron $Z_c^{\pm }(3900)$ and Evidence for the Neutral $Z_c^0(3900)$ in $e^{+}{e}^{-}\to \pi \pi J/\psi$ at $\sqrt{s}=4170$ MeV
• Observation of a charged (DD*bar)- mass peak in e+e- --> pi+ (DD*bar)- at Ecm=4.26 GeV
• Observation of a charged charmoniumlike structure in $e^{+}{e}^{-}\to (D^{\ast }{\bar{D}}^{\ast }{)}^{\pm }{\pi }^{\mp }$ at $\sqrt{s}=4.26$GeV
• Evidence of a Broad Structure at an Invariant Mass of 4.32 GeV/$c^2$ in the Reaction $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}\psi (2S)$ Measured at BaBar
• Measurements of the Cross Section for e+e- -> hadrons at Center-of-Mass Energies from 2 to 5 GeV
• Charmonium Decays of $Y(4260), psi(4160), and psi(4040)
• Gluonic charmonium resonances at BaBar and Belle?
• Four Quark Interpretation of Y(4260)
• Gauge Invariant Lagrangians for Free and Interacting Higher Spin Fields. A Review of the BRST formulation
• Masses of heavy tetraquarks in the relativistic quark model
• Confirmation of the Y(4260) Resonance Production in ISR
• The Possible Interpretations of Y(4260)
• Search for hadronic transition ${\chi }_{cJ}\to {\eta }_c{\pi }^{+}{\pi }^{-}$ and observation of ${\chi }_{cJ}\to K\bar{K}\pi \pi \pi$
• Suppressed decay into open charm for the Y(4260) being an hybrid
• Branching fraction measurements of χ_{c0} and χ_{c2} to π^0π^0 and ηη
• Measurement of the near-threshold $e^{+}{e}^{-}\to D\bar{D}$ cross section using initial-state radiation
• Study of $e^{+}{e}^{-}\to \omega {\chi }_{cJ}$ at center-of-mass energies from 4.21 to 4.42 GeV
• Observation of $e^{+}{e}^{-}\to {\pi }^0{\pi }^0{h}_c$ and a neutral charmoniumlike structure $Z_c(4020{)}^0$
• Measurement of the near-threshold $e^{+}{e}^{-}\to D^{(\ast )\pm }D{}^{\ast \mp }$ cross section using initial-state radiation
• Study of the Exclusive Initial-State Radiation Production of the $D\bar{D}$ System
• Study of the reaction e^{+}e^{-} -->J/psiπ^{+}π^{-} via initial-state radiation at BaBar
• One Explanation for the Exotic State Y(4260)
• Possible Molecular Structure of the Newly Observed Y(4260)
• QCD Multipole Expansion and Hadronic Transitions in Heavy Quarkonium Systems
• Observation of $\psi (4415)\to D\bar{D}{}_2^{\ast }(2460)$ decay using initial-state radiation
• Measurement of the e+e- --> D0D*-pi+ cross section using initial-state radiation
• The beam energy measurement system for the Beijing electron-positron collider
• Observation of ψ(4040) and ψ(4160) decay into ηJ/ψ
• The Y(4260) as an omega chi_{c1} molecular state
• Y(4260) on the lattice
• Observation of $e^{+}{e}^{-}\to \eta J/\psi$ at center-of-mass energy $sqrts=4.009$ GeV
• Gluonic excitation of non-exotic hybrid charmonium from lattice QCD
• Open charm effects in $e^{+}{e}^{-}\to J/\psi \eta$, $J/\psi {\pi }^0$ and $\varphi {\eta }_c$
• Understanding the cross section of $e^{+}{e}^{-}\to \eta J/\psi$ process via nonrelativistic QCD
• Measurement of ${\chi }_{cJ}$ decaying into ${\eta }^{\prime }{K}^{+}{K}^{-}$

Cited by in corpus (28)

• Hadronic molecules
• The $XYZ$ states: experimental and theoretical status and perspectives
• Non-Standard Heavy Mesons and Baryons, an Experimental Review
• Heavy-Quark QCD Exotica
• Precise measurement of the $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}J/\psi$ cross section at center-of-mass energies from 3.77 to 4.60 GeV
• Measurement of $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}\psi (3686)$ from 4.008 to 4.600$\sim$GeV and observation of a charged structure in the ${\pi }^{\pm }\psi (3686)$ mass spectrum
• The XYZ states revisited
• Observation of the $Y(4230)$ and a new structure in $e^{+}{e}^{-}\to K^{+}{K}^{-}J/\psi$
• Energy scan of the $e^{+}{e}^{-}\to h_b(nP){\pi }^{+}{\pi }^{-}$ $(n=1,2)$ cross sections and evidence for ${\rm Y}(11020)$ decays into charged bottomonium-like states
• Observation of the decay $X(3872)\to {\pi }^0{\chi }_{c1}(1P)$
• Observation of the $Y(4220)$ and $Y(4360)$ in the process $e^{+}{e}^{-}\to \eta J/\psi$
• Measurement of the absolute branching fraction of $D_{s0}^{\ast \pm }(2317)\to {\pi }^0{D}_s^{\pm }$
• Observation of the $Y(4230)$ and evidence for a new vector charmonium-like state $Y(4710)$ in $e^{+}{e}^{-}\to K_S^0{K}_S^{0}J/\psi$
• Cross section measurement of $e^{+}{e}^{-}\to {\eta }^{\prime }J/\psi$ from $\sqrt{s}=4.178$ to $4.600$ GeV
• Modeling Charmonium-$\eta$ Decays of $J^{PC}=1^{--}$ Higher Charmonia
• Observation of $e^{+}{e}^{-}\to K\bar{K}J/\psi$ at center-of-mass energies from 4.189 to 4.600 GeV
• Observation of $e^{+}{e}^{-}\to {\eta }^{\prime }J/\psi$ at center-of-mass energies between 4.189 and 4.600 GeV
• Study of the XYZ states at the BESIII
• Observation of $e^{+}{e}^{-}\to \eta h_c$ at center-of-mass energies from 4.085 to 4.600 GeV
• Physics Accomplishments and Future Prospects of the BES Experiments at the BEPC Collider
• Measurement of higher-order multipole amplitudes in $\psi (3686)\to \gamma {\chi }_{c1,2}$ with ${\chi }_{c1,2}\to \gamma J/\psi$ and search for the transition ${\eta }_c(2S)\to \gamma J/\psi$
• Measurement of $e^{+}{e}^{-}\to \eta J/\psi$ Cross Section from $\sqrt{s}=$ 3.808 GeV to 4.951 GeV
• Cross section measurements of $e^{+}{e}^{-}\to \Phi K^{+}{K}^{-}$ and $e^{+}{e}^{-}\to \Phi K_S^0{K}_S^0$ at center-of-mass energies between 3.7730 GeV and 4.7008 GeV
• Search for the reaction $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{\chi }_{cJ}$ and a charmonium-like structure decaying to ${\chi }_{cJ}{\pi }^{\pm }$ between 4.18 and 4.60 GeV
• Recent Results on Hadron Spectroscopy from BESIII
• Studies of Charmonium-like States at BESIII
• Measurement of the Inclusive Cross Sections of Prompt $J/\psi$ and $\psi (3686)$ Production in $e^{+}{e}^{-}$ Annihilation from $\sqrt{s}=3.808$ to $4.951$ GeV
• Observation of the first iso-spin Charmonium-like State $Z_c(4020)$ }