Photoproduction of penta-quark states: a theoretical perspective

4 Jun 2019, 14:45
30m
Bruno Touschek Auditorium (INFN-LNF, Italy)

Bruno Touschek Auditorium

INFN-LNF, Italy

Via E. Fermi, 40 I-00044 Frascati
Talk Gamma-Hadron Collisions Gamma-Hadron Collisions

Speaker

Giancarlo Rossi (University of Roma Tor Vergata)

Description

The 2015 LHCb discovery of an exotic structure (denoted by $P_c^+$) decaying in $J/\psi \,p$ and conjectured to be a penta-quark state has triggered a renewed interest in the possible existence of multiquark states not predicted by the naive quark model. In this talk we present some considerations on $P_c$ photo-production experiments, aimed at testing its multi-quark interpretation in the framework of a 40-years-old ''string-junction'' picture that allows a unified description of baryons, tetra-, and penta-quark states.

Summary

The 2015 LHCb discovery of an exotic structure (denoted by $P_c^+$) decaying in $J/\psi \,p$ and conjectured to be a penta-quark state has triggered a renewed interest in the possible existence of multiquark states not predicted by the naive quark model. In this talk we present some considerations on $P_c$ photo-production experiments, aimed at testing its multi-quark interpretation in the framework of a 40-years-old ''string-junction'' picture that allows a unified description of baryons, tetra-, and penta-quark states.

Primary authors

Giancarlo Rossi (University of Roma Tor Vergata) Gabriele Veneziano (Collège de France and CERN)

Presentation materials