Lattice spectroscopy with focus on exotics

Abstract

Recent lattice QCD results on the hadron spectroscopy with beauty and charm quarks is reviewed. The focus of the review are exotic hadrons, while non-lattice approaches and conventional hadrons are reported as well. We discuss the recently discovered ${\Omega }_c^{\ast }$, a charmonium state with spin three, $P_c$ pentaquarks, $B_c(2S)$ and ${\Lambda }_b^{\ast }$, the long-standing challenges for theory $Z_c$, $Z_b$ and $X(3872)$, and we review predictions for yet undiscovered states $bb\bar{q}\bar{q}$, $\bar{b}b\bar{b}b$, highly excited and hybrid $\bar{b}b$, baryons with bottom quarks and still-missing $B_s$ mesons.

Comments: 12 pages, invited review talk at Beauty 2019, Ljubljana, Slovenia, minor corrections and modified discussion on charmed mesons in Section 6