On the Existence of Light-Scalar Mesons kappa(800) and kappa'(1150): The U~(12) Scheme and BES II Data

TL;DR

This paper predicts the existence of a light strange-scalar meson kappa' around 1.1-1.2 GeV, supported by the U~(12) classification scheme and BES II experimental data, expanding the understanding of scalar mesons.

Contribution

It introduces the prediction of the kappa' meson within the U~(12) scheme and analyzes BES II data to support its existence.

Findings

Kappa' has a mass around 1.1-1.2 GeV.

Kappa' couples strongly to Kappa(800)sigma(600).

BES II data supports the existence of kappa'.

Abstract

We present that there should exist a light strange-scalar meson kappa', in addition to the kappa(800), which has a mass around 1.1-1.2 GeV, a rather narrow width, and couples strongly to kappa(800)sigma(600) (Kpipipi) but weakly to Kpi, based upon the U~(12)-classification scheme of hadrons and BES II data on J/psi -> barK*(892)0K+pi- decay.