Two, three, many body systems involving mesons. Multimeson condensates

TL;DR

This paper reviews theoretical and experimental studies of unconventional many-meson systems, predicting new states and suggesting experimental searches at major facilities.

Contribution

It introduces novel multi-meson and meson-baryon systems, some with experimental counterparts and others as new predictions for future detection.

Findings

Identification of multi-meson bound states

Predictions of new meson-baryon configurations

Suggested experimental searches at major facilities

Abstract

In this talk we review results from studies with unconventional many hadron systems containing mesons: systems with two mesons and one baryon, three mesons, some novel systems with two baryons and one meson, and finally systems with many vector mesons, up to six, with their spins aligned forming states of increasing spin. We show that in many cases one has experimental counterparts for the states found, while in some other cases they remain as predictions, which we suggest to be searched in BESIII, Belle, LHCb, FAIR and other facilities.