Speaker
Description
The CMS experiment has conducted extensive research in heavy flavor spectroscopy, revealing significant findings in both exotic hadron production and traditional hadron decays. Recent results include the first evidence for the production of the exotic state (X(3872)) in heavy-ion collisions, providing new insights into its internal structure and production mechanisms. Additionally, new structures have been observed in the (J/\psi J/\psi) mass spectrum, including a previously unreported resonance in (J/\psi J/\psi \to \mu^+\mu^- \mu^+\mu^-). These studies contribute to understanding the nature of exotic multiquark states. Beyond exotic hadrons, CMS has also observed new decay channels in conventional baryons and mesons. This includes the first observation of ( B^0 \to \psi(2S) K_S^0 \pi^+ \pi^- ), ( \Lambda_b^0 \to J/\psi \Xi^- K^+ ), and ( \Xi_b^- \to \psi(2S) \Xi^- ), expanding our knowledge of hadron decays involving heavy quarks. These results provide crucial experimental input for testing quantum chromodynamics models and improving our understanding of hadronic structure.
