Cross sections measurement of e⁺e^-→ Ξ(1530)⁰Ξ⁰ + c.c. and search for ψ(3770)→Ξ(1530)⁰Ξ⁰ + c.c.

2025/12/19 by Colaboration, BESIII, :, Ablikim, M. +681
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)

paper · doi:10.48550/arxiv.2512.17275

Abstract

Using e⁺e^- collision data collected with the BESIII detector corresponding to an integrated luminosity of 44.2 fb^-1, we measure the Born cross sections for the process e⁺e^- → Ξ(1530)⁰ Ξ⁰ + c.c. at forty-eight center-of-mass energies between 3.51 and 4.95 GeV. The potential signal from non-DD decays for ψ(3770), i.e. ψ(3770)→ Ξ(1530)⁰ Ξ⁰+ c.c., is investigated by fitting the dressed cross section, no obvious signal is found. The upper limit of B(ψ(3770) → Ξ(1530)⁰ Ξ⁰) at 90% confidence level is given.

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