What question did this study set out to answer?

This research aims to explore and characterize the properties of the recently discovered X(2370) particle.

May 14, 2026Open Access

BESIII discovers a glueball-like particle X(2370) in J particle decays

Key Points

This research aims to explore and characterize the properties of the recently discovered X(2370) particle.
Utilized the BESIII experiment at BEPCII Collider to analyze decay processes of J particles.
Investigated the spin-parity quantum numbers of X(2370) using J → γ K S 0 K S 0 η ′ process.
Determined the spin-parity quantum numbers of X(2370) to be 0 − +.
Observed new decay modes including X(2370) → K S 0 K S 0 π 0, π 0 π 0 η, and a 0 π 0.
Confirmed mass and decay characteristics consistent with the properties of a light pseudoscalar glueball.

Abstract

The X (2370) particle was first discovered in J → γ π + π − η ′ process in 2011 with the BESIII experiment at BEPCII Collider. In 2024, the spin-parity quantum numbers of the X (2370) was determined to be 0 − + in J → γ K S 0 K S 0 η ′ process. New decay modes of X ( 2370 ) → K S 0 K S 0 π 0 , π 0 π 0 η and a 0 π 0 were observed recently. The mass, spin-parity quantum numbers, production and decay properties of the X (2370) particle are consistent with the features of the lightest pseudoscalar glueball.

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Cite This Study

Shan Jin (Fri,) studied this question.

synapsesocial.com/papers/6a05684ea550a87e60a20b72 https://doi.org/https://doi.org/10.1016/j.nuclphysb.2026.117495

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