Observation of a resonant structure in $e^{+}{e}^{-}\to K^{+}{K}^{-}{\pi }^0{\pi }^0$

Abstract

Using $e^{+}{e}^{-}$ collision data samples with center-of-mass energies ranging from 2.000 to 2.644 GeV, collected by the BESIII detector at the BEPCII collider, and with a total integrated luminosity of 300 pb^{-1}, a partial-wave analysis is performed for the process $e^{+}{e}^{-}\to K^{+}{K}^{-}{\pi }^0{\pi }^0$. The total Born cross sections for the process $e^{+}{e}^{-}\to K^{+}{K}^{-}{\pi }^0{\pi }^0$, as well as the Born cross sections f or the subprocesses $e^{+}{e}^{-}\to \varphi {\pi }^0{\pi }^0$, $K^{+}(1460)K^{-}$, $K_1^{+}(1400)K^{-}$, $K_1^{+}(1270)K^{-}$ and $K^{\ast +}(892)K^{\ast -}(892)$, are measured versus the center-of-mass energy. The corresponding results for $e^{+}{e}^{-}\to K^{+}{K}^{-}{\pi }^0{\pi }^0$ and $\varphi {\pi }^0{\pi }^0$ are consistent with those of BaBar and have much improved precision.By analyzing the cross sections for the four subprocesses, $K^{+}(1460)K^{-}$, $K_1^{+}(1400)K^{-}$, $K_1^{+}(1270)K^{-}$ and $K^{\ast +}{K}^{\ast -}$, a structure with mass $M$ = (2126.5 $\pm$ 16.8 $\pm$ 12.4)~MeV/c^{2} and width $\Gamma$ = (106.9 $\pm$ 32.1 $\pm$ 28.1)~MeV is observed with an overall statistical significance of 6.3 $\sigma$, although with very limited significance in the subprocesses $e^{+}{e}^{-}\to K_1^{+}(1270)K^{-}$ and $K^{\ast +}(892)K^{\ast -}(892)$. The resonant parameters of the observed structure suggest it can be identified with the $\varphi (2170)$, thus the results provide valuable input to the internal nature of the $\varphi (2170)$.

References in corpus (33)

• Design and Construction of the BESIII Detector
• Quest for precision in hadronic cross sections at low energy: Monte Carlo tools vs. experimental data
• Search for hadronic transition ${\chi }_{cJ}\to {\eta }_c{\pi }^{+}{\pi }^{-}$ and observation of ${\chi }_{cJ}\to K\bar{K}\pi \pi \pi$
• Strong Decays of Strange Quarkonia
• Matching perturbative and Parton Shower corrections to Bhabha process at flavour factories
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• Hybrid Meson Decay Phenomenology
• A Structure at 2175 MeV in $e^{+}{e}^{-}\to \varphi f_0(980)$ Observed via Initial-State Radiation
• X(2175) as a resonant state of the $\varphi K\bar{K}$ system
• Observation of Y(2175) in $J/\psi \to \eta \varphi f_0(980)$
• Analysis of Y(2175) as a tetraquark state with QCD sum rules
• The $e^{+}{e}^{-}\to K^{+}{K}^{-}{\pi }^{+}{\pi }^{-}$, $K^{+}{K}^{-}{\pi }^0{\pi }^0$ and $K^{+}{K}^{-}{K}^{+}{K}^{-}$ Cross Sections Measured with Initial-State Radiation
• Observation of the $\varphi (1680)$ and the Y(2175) in $e^{+}{e}^{-}\to \varphi {\pi }^{+}{\pi }^{-}$
• Exclusive event generator for $e^{+}{e}^{-}$ scan experiments
• The $\sigma$ pole in $J/\psi \to \omega {\pi }^{+}{\pi }^{-}$
• A Candidate for $1^{--}$ Strangeonium Hybrid
• Y(2175): Distinguish Hybrid State from Higher Quarkonium
• Higher Tetraquark Particles
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• Measurement of $e^{+}{e}^{-}\to K^{+}{K}^{-}$ cross section at $\sqrt{s}=2.00-3.08$ GeV
• The Y(2175) State in the QCD Sum Rule
• Universal description of radially excited heavy and light vector mesons
• Non-strange partner of strangeonium-like state Y(2175)
• Study of J/psi->eta phi pi+pi- at BESIII
• Luminosity measurements for the R scan experiment at BESIII
• Production of $\sigma$ in $\psi (2S)\to {\pi }^{+}{\pi }^{-}J/\psi$
• Selected strong decays of $\eta (2225)$ and $\varphi (2170)$ as $\Lambda \bar{\Lambda }$ bound states
• Study of a0(980)--f0(980) mixing
• The meson-exchange model for the $\Lambda \bar{\Lambda }$ interaction
• Study of J/Psi decays into eta Kstar Kstar-bar
• Baryonia and near-threshold enhancements
• Study on the strong decays of $\varphi (2170)$ and a grand expectation for the future charm-tau factory
• ϕK^{+}K^{-} production in electron-positron annihilation

Cited by in corpus (29)

• STCF Conceptual Design Report: Volume 1 -- Physics & Detector
• Observation of a resonant structure in $e^{+}{e}^{-}\to \omega \eta$ and another in $e^{+}{e}^{-}\to \omega {\pi }^0$ at center-of-mass energies between 2.00 and 3.08 GeV
• Observation of a structure in $e^{+}{e}^{-}\to \varphi {\eta }^{\prime }$ at $\sqrt{s}$ from 2.05 to 3.08 GeV
• Fully-strange tetraquark $ss\bar{s}\bar{s}$ spectrum and possible experimental evidence
• Mass spectrum and strong decays of strangeonium in a constituent quark model
• Possible structure of the newly found exotic state ${\eta }_1(1855)$
• $S$- and $P$-wave fully-strange tetraquark states from QCD sum rules
• Light baryonium spectrum
• Measurement of the Born cross sections for $e^{+}{e}^{-}\to {\eta }^{\prime }{\pi }^{+}{\pi }^{-}$ at center-of-mass energies between $2.00$ and $3.08$ GeV
• Study of the process $e^{+}{e}^{-}\to \varphi \eta$ at center-of-mass energies between 2.00 and 3.08 GeV
• Kaon and strangeonium spectrum in Regge phenomenology
• Light unflavor vector meson spectroscopy around the mass range of $2.4\sim 3$ GeV and possible experimental evidence
• Electromagnetic form factors of $\Lambda$ hyperon in the vector meson dominance model and a possible explanation of the near-threshold enhancement of the $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }$ reaction
• Possible Assignment of Excited Light ${}^3{S}_1$ Vector Mesons
• Timelike nucleon electromagnetic form factors: All about interference of isospin amplitudes
• Cross section measurement of $e^{+}{e}^{-}\to K_S^0{K}_L^0$ at $\sqrt{s}=2.00-3.08\mathrm{GeV}$
• Deciphering the light vector meson contribution to the cross sections of $e^{+}{e}^{-}$ annihilations into the open-strange channels through a combined analysis
• Strangeonium-like hybrids on the lattice
• Partial decay widths of $\varphi (2170)$ to kaonic resonances
• Reconciling the X(2240) with the Y(2175)
• Toward $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}$ annihilation inspired by higher $\rho$ mesonic states around 2.2 GeV
• Understanding oscillating features of the timelike nucleon electromagnetic form factors within the extending vector meson dominance model
• Fully-strange tetraquark states with the exotic quantum numbers $J^{PC}=0^{+-}$ and $2^{+-}$
• Natural explanation of recent results on $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }$
• SU(3) analysis of fully-light tetraquarks in heavy meson weak decays
• Measurement of the cross sections for $e^{+}{e}^{-}\to \eta {\pi }^{+}{\pi }^{-}$ at center-of-mass energies between 2.00 and 3.08 GeV
• Light tetraquark states with the exotic quantum number $J^{PC}=3^{-+}$
• Fully strange tetraquark states via QCD sum rules
• Single Inclusive ${\pi }^{\pm }$ and $K^{\pm }$ Production in $e^{+}{e}^{-}$ Annihilation at center-of-mass Energies from 2.000 to 3.671GeV