Abstract

The talk will present a recent observation of a new class of exotic hadrons - the observation of the doubly charmed tetraquark at LHCb experiment. This exotic state manifests itself as a narrow peak in the mass spectrum of D0D0π+ mesons just below the D∗+D0 mass threshold. Details of the discovery will be presented along with discussion of its importance for understanding the QCD. I will also talk about prospects for future measurements which have a potential to make a breakthrough in hadron spectroscopy and nuclear physics.