Studies of $b$-hadrons and quarkonia at LHCb

Abstract

LHCb has productive studies of quarkonia and $b$-hadrons which provide essential inputs to study quantum chromodynamics (QCD). In this proceeding, seven recent results are reported: the observation of a new excited $Ξ_b^0$ resonance in $Ξ_b^- π^+$ final states, the new excited $B_s^0$ state is observed in $B^+ K^-$ mass spectrum, the first observation of suppressed semileptonic $B_s^0 \rightarrow K^- μ^+ ν_μ$ decay, the first observation of the decay $B^0 \rightarrow D^0 \bar{D}^0 K^+ π^-$, the first observation of the Cabibbo-suppressed decay $Λ_b^0 \rightarrow χ_{c1} p π^-$, the first observation of $Λ_b^0 \rightarrow Λ_c^+ K^+ K^- π^-$ decay, and end this report with the first search for the doubly heavy baryon $Ω_{bc}^{0}$ and a search for $Ξ_{bc}^0$ baryon.