Speaker
Bo Fang
Description
Study of exotic hadrons provides an important perspective on the nature of QCD. Using the pp interaction dataset collected during the Run1 and Run2 data-taking periods, corresponding to an integrated luminosity of 9 fb$^{-1}$, LHCb established the first evidence of pentaquark with strangeness, $P_{\psi s}^{\Lambda}$(4459)$^0$, in $\Xi_b^- \to J/\psi \Lambda K^-$ decays, and further made the first observation of pentaquark with strangeness, $P_{\psi s}^{\Lambda}$(4338)$^0$, in $B^0 \to J/\psi \Lambda \bar{p}$ decays. This talk will focus on the experimental approach of extracting these pentaquark-candidate signals using LHCb data, and discuss about the potential interpretations about the nature of these exotic states.
