Measurement of cross section for $e^{+}{e}^{-}\to {\Xi }^0{\bar{\Xi }}^0$ near threshold

Abstract

Using $e^{+}{e}^{-}$ collision data at ten center-of-mass energies between 2.644 and 3.080 GeV collected with the BESIII detector at BEPCII and corresponding to an integrated luminosity of about 500 pb${}^{-1}$, we measure the cross sections and effective form factors for the process $e^{+}{e}^{-}\to {\Xi }^0{\bar{\Xi }}^0$ utilizing a single-tag method. A fit to the cross section of $e^{+}{e}^{-}\to {\Xi }^0{\bar{\Xi }}^0$ with a pQCD-driven power function is performed, from which no significant resonance or threshold enhancement is observed. In addition, the ratio of cross sections for the processes $e^{+}{e}^{-}\to {\Xi }^{-}{\bar{\Xi }}^{+}$ and ${\Xi }^0{\bar{\Xi }}^0$ is calculated using recent BESIII measurement and is found to be compatible with expectation from isospin symmetry.

11 pages, 5 figures. Consistent with paper published in Phys. Lett. B 820 (2021) 136557

References in corpus (13)

• Future Physics Programme of BESIII
• Observation of a near-threshold enhancement in the e+e- -->Lambda_c+Lambda_c- cross section using initial-state radiation
• Measurement of the proton form factor by studying $e^{+}{e}^{-}\to p\bar{p}$
• Study of the process $e^{+}{e}^{-}\to n\bar{n}$ at the VEPP-2000 $e^{+}{e}^{-}$ collider with the SND detector
• Nucleon Electromagnetic Form Factors in the Timelike Region
• Unexpected features of e+e-->ppbar and e+e-->lambda-lambdabar cross sections near threshold
• Measurements of Sigma+ and Sigma- Time-like Electromagnetic Form Factors for center-of-mass energies from 2.3864 to 3.0200 GeV
• Measurement of proton electromagnetic form factors in the time-like region using initial state radiation at BESIII
• On the strong energy dependence of the e^+e^- to ppbar amplitude near threshold
• Measurement of the cross section for $e^{+}{e}^{-}\to {\Xi }^{-}{\bar{\Xi }}^{+}$ and observation of an excited $\Xi$ baryon
• Measurements of Baryon Pair Decays of ${\chi }_{cJ}$ Mesons
• The Construction of the BESIII Experiment
• A more exact solution for incorporating multiplicative systematic uncertainties in branching ratio limits

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• Probing the internal structure of baryons
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• Timelike nucleon electromagnetic form factors: All about interference of isospin amplitudes
• First simultaneous measurement of ${\Xi }^0$ and ${\bar{\Xi }}^0$ asymmetry parameters in $\psi (3686)$ decay
• Toy model to understand oscillatory behavior in timelike nucleon form factors
• Study of $e^{+}{e}^{-}\to {\Omega }^{-}{\bar{\Omega }}^{+}$ at center-of-mass energies from 3.49 to 3.67 GeV
• The $\Sigma$ and $\Xi$ electromagnetic form factors in the extended vector meson dominance model
• Determination of the ${\Sigma }^{+}$ Timelike Electromagnetic Form Factors
• Electromagnetic form factors of neutron and neutral stange hyperons in the oscillating view of point
• Production and decay of polarized hyperon-antihyperon pairs
• Study of $e^{+}{e}^{-}\to {\Sigma }^0\overline{\Sigma }{}^0$ and ${\Sigma }^{+}\overline{\Sigma }{}^{-}$ by Initial State Radiation Method at Belle
• Measurement of the cross section of $e^{+}{e}^{-}\to {\Xi }^{-}{\bar{\Xi }}^{+}$ at center-of-mass energies between 3.510 and 4.843 GeV
• Observation of $\psi (3686)\to \Xi (1530{)}^0\bar{\Xi }(1530{)}^0$ and $\Xi (1530{)}^0{\bar{\Xi }}^0$
• Higher strangeonium decays into light flavor baryon pairs like $\Lambda \bar{\Lambda }$, $\Sigma \bar{\Sigma }$, and $\Xi \bar{\Xi }$
• Compared analysis of time-like hyperon form factors
• The electromagnetic form factors and spin polarization of ${\Lambda }_c^{+}$ in the process $e^{+}{e}^{-}\to {\Lambda }_c^{+}{\bar{\Lambda }}_c^{-}$
• Measurement of Born cross section of $e^{+}{e}^{-}\to {\Sigma }^0{\bar{\Sigma }}^0$ at $\sqrt{s}=3.50-4.95$ GeV
• Unraveling the structure of $\Lambda$ hyperons with polarized $\Lambda \bar{\Lambda }$ pairs
• A description of charmonia decays $J/\psi \to B\bar{B}$ within the QCD factorisation framework
• Accessing baryon-antibaryon generalized distribution amplitudes in $e^{\pm }\gamma \to e^{\pm }B\bar{B}$