Speaker
Description
The LHCb experiment's exceptional vertex and momentum resolution enables cutting-edge heavy hadron spectroscopy studies. Recent achievements include discovering two new excited $\Xi_{b}$ states in the $\Xi_{b}\pi^{+}\pi^{-}$ final state, observing the rare $J/\psi\rightarrow \mu^{+}\mu^{-}\mu^{+}\mu^{-}$ decay mode, and precision measurements of $\Xi_{b}^{-}$ lifetime and masses of $\chi_{b}$, $\Xi_{b}^{-}$, and $\Omega_{b}^{-}$ hadrons.
B-hadron decays with open charm hadrons provide excellent opportunities for spectroscopy of both conventional and exotic states. Complete B-decay kinematics reconstruction enables amplitude analyses that reveal precise information about intermediate resonances and their internal structure.
Since the 2003 discovery of $\chi_{c1}(3872)$, numerous hidden-charm tetraquark candidates have emerged, though their nature remains controversial. LHCb's recent studies include $\chi_{c1}(3872)$ radiative decays and amplitude analyses of b-hadron decays potentially proceeding through exotic intermediate states.
This talk will present the latest results from these spectroscopy programs, highlighting LHCb's contributions to understanding the hadron spectrum and the search for exotic states.
