Measurement of Born cross section of e + e − → Σ + Σ ¯ − at center-of-mass energies between 3.510 and 4.951 GeV

Journal article

Using 24.1 fb−1 of e+e− collision data collected with the BESIII detector at the BEPCII collider, the Born cross sections and effective form factors of the e+e−→Σ+Σ¯− reaction are measured. The measurements are performed at center-of-mass energies ranging from 3.510 to 4.951 GeV. No significant evidence for the decay of the charmonium(-like) states, ψ(3770), ψ(4040), ψ(4160), Y(4230), Y(4360), ψ(4415), and Y(4660), into a Σ+Σ¯− final state is observed. Consequently, upper limits for the products of the branching fractions and the electronic partial widths at the 90% confidence level are reported for these decays.

Authors: Ablikim, M; Achasov, MN; Adlarson, P; Afedulidis, O; Ai, XC

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Springer
• Journal: Journal of High Energy Physics
• Volume: 2024
• Issue: 5
• Article number: 22
• Publication date: 2024-05-03
• Acceptance date: 2024-04-07
• DOI: 10.1007/jhep05(2024)022
• EISSN: 1029-8479
• Language: English
• Keywords: QCD; Branching fraction; e+-e− Experiments; Electroweak Interaction