Spectroscopy with glueballs and the role of f_0(1370)

TL;DR

This paper reviews the theoretical and experimental status of glueballs, especially focusing on the scalar f_0(1370), and discusses its implications for understanding QCD and meson classification.

Contribution

It provides a comprehensive analysis of the arguments for and against the existence of f_0(1370) and explores models with and without this state.

Findings

f_0(1370) could be a glueball candidate

The existence of f_0(1370) impacts scalar meson classification

Experimental evidence for f_0(1370) remains ambiguous

Abstract

The existence of glueballs, bound states of gluons, is one of the basic predictions of QCD; the lightest state is expected to be a scalar. The experimental situation, however, is still ambiguous. The existence of f_0(1370) would point to a supernumerous state within the nonet classification of scalars and would therefore provide a hint towards a glueball. In this talk we summarize some arguments in favour and against the existence of f_0(1370) and discuss schemes with and without this state included.