Publication

Observation of Ξ (1530)0 Polarization and Determination of Its Electric and Magnetic Moments in ψ (3686) → Ξ (1530)0 Ξ ¯ (1530)0

2026

Abstract

Using the data sample of 2.7×109 ψ(3686) events collected with the BESIII detector at the BEPCII collider, we present an observation of the Ξ(1530)0 polarization in the decay ψ(3686)→Ξ(1530)0Ξ¯(1530)0 with a significance larger than 20σ compared with all other tested hypotheses. The helicity amplitudes for the process ψ(3686)→Ξ(1530)0Ξ¯(1530)0 and the moduli of form factors including electric charge, magnetic dipole, electric quadrupole, and magnetic octupole are measured for the first time by performing an angular distribution analysis. Additionally, the polarization correlations between Ξ(1530)0 and Ξ¯(1530)0 are measured.

Official source

https://infoscience.epfl.ch/entities/publication/31466673-37dc-41ee-85c0-0bfcdae1859b

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2026

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/31466673-37dc-41ee-85c0-0bfcdae1859b

About this result

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Observation of Ξ (1530)0 Polarization and Determination of Its Electric and Magnetic Moments in ψ (3686) → Ξ (1530)0 Ξ ¯ (1530)0

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