Recent BES Results on Hadron Spectroscopy

TL;DR

This paper reports recent BES experiment findings on various hadron states, including the Y(2175), \\eta(2225), and X(1440), through different J/\\psi decay channels, enhancing understanding of hadron spectroscopy.

Contribution

It provides new experimental observations of specific hadron states in J/\\psi decays, contributing valuable data to hadron spectroscopy research.

Findings

Observation of Y(2175) in J/\\psi\\to \\phi f_0(980) \\eta

Study of \\eta(2225) in J/\\psi\\to \\gamma \\phi \\phi

Production of X(1440) recoiling against \\omega or \\phi in J/\\psi decays

Abstract

We present recent results from the BES experiment on the observation of the Y(2175) in J/\psi\to \phi f_0(980) \eta, study of \eta(2225) in J/\psi\to \gamma \phi \phi, and the production of X(1440) recoiling against an \omega or a \phi in J/\psi hadronic decays. The observation of \psi(2S) radiative decays is also presented.