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Free keywords:
Jets & heavy flavor physics, Multiquark bound states, Particle & resonance production, Relativistic heavy-ion collisions
MPINP:
LHCb - Abteilung Hinton
Abstract:
The LHCb Collaboration measures production of the exotic hadron Xc1(3872) in proton-nucleus collisions for the first time. Comparison with the charmonium state ψ(2S) suggests that the exotic Xc1(3872) experiences different dynamics in the nuclear medium than conventional hadrons, and comparison with data from proton-proton collisions indicates that the presence of the nucleus may modify Xc1(3872) production rates. This is the first measurement of the nuclear modification factor of an exotic hadron.