About the $J\!/\!\psi\,J\!/\!\psi$ peak of LHCb: fully-charmed tetraquark?

Jean-Marc Richard (1)

1 IP2I Lyon - Institut de Physique des 2 Infinis de Lyon

We discuss the interpretation of the $J\!/\!\psi\,J\!/\!\psi$ peak recently seen by the LHCb collaboration at CERN, and take the opportunity to review the experimental and theoretical state of the art for exotic hadrons. It is stressed that in constituent models, the states in the continuum require a dedicated treatment to single out resonances atop the continuum.

Mots clés: J/psi(3100): pair production; hadron: exotic; tetraquark; quark: potential; LHC-B

Domaines: Physique des Hautes Energies - Phénoménologie [hep-ph]

Jean-Marc Richard. About the $J\!/\!\psi\,J\!/\!\psi$ peak of LHCb: fully-charmed tetraquark?. Sci.Bull., 2020, 65, pp.1954-1955. ⟨10.1016/j.scib.2020.08.020⟩. ⟨hal-02933996⟩