Decays into {\pi}+{\pi}- of the f0(1370) scalar glueball candidate in pp central exclusive production experiments

TL;DR

This paper confirms the decay of the f0(1370) scalar meson into + - pairs through central exclusive production experiments, supporting its existence and aiding the search for the scalar glueball.

Contribution

It provides new experimental evidence of the f0(1370) decay into + - pairs, clarifying previous conflicting results and advancing the understanding of scalar mesons and glueball candidates.

Findings

f0(1370) decays into + - are observed as a peak between 1.1 and 1.6 GeV

Confirms the existence of the f0(1370) scalar meson in CEP data

Supports the identification of the scalar glueball ground-state

Abstract

The existence and properties of the f0(1370) scalar meson are rather well established from data of antiproton annihilations at rest. However conflicting results from Central Exclusive Production (CEP) experiments of the last millennium and ignorance of data from antiproton annihilations at rest in H2 and D2 bubble chambers have generated doubts on the very existence of the f0(1370). Properties of {\pi}+{\pi}- pairs produced in central exclusive production (CEP) reactions observed in old data together with data collected in the current decade at high energy colliders permit to show that {\pi}+{\pi}- decays of the f0(1370) meson are directly observable as an isolated peak between 1.1 and 1.6 GeV. Consequences of this observation and prospects for the identification of the scalar glueball ground-state are discussed.