LHCb Results on Penta(tetra)-Quark Search

The LHCb experiment is designed to study the properties and decays of heavy flavored hadrons produced in pp collisions at the LHC. The data collected in the LHC Run I enables precision spectroscopy studies of beauty and charm hadrons. The latest results on spectroscopy of conventional and exotic hadrons are reviewed, such as the discovery of the first charmonium pentaquark states in the J/ψp system or the confirmation of resonant nature of the Z(4430)− mesonic state. LHCb has also made significant contributions to determination of the quantum numbers for the X(3872) state and to exclude the existence of the X(5568) tetraquark candidate. The LHCb results described in the present document have dramatically increased the interest on spectroscopy of heavy hadrons.