Lattice spectroscopy with focus on exotics

TL;DR

This review discusses recent lattice QCD findings on exotic hadrons with beauty and charm quarks, highlighting discoveries, theoretical challenges, and predictions for new states in hadron spectroscopy.

Contribution

It provides a comprehensive overview of lattice QCD results on exotic hadrons, emphasizing recent discoveries and future predictions in heavy quark spectroscopy.

Findings

Discovery of $ ext{Ω}_c^*$ and $P_c$ pentaquarks.

Challenges in understanding $Z_c$, $Z_b$, and $X(3872)$.

Predictions for undiscovered heavy hadron states.

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 $\Omega_c^*$, a charmonium state with spin three, $P_c$ pentaquarks, $B_c(2S)$ and $\Lambda_b^*$, the long-standing challenges for theory $Z_c$, $Z_b$ and $X(3872)$, and we review predictions for yet undiscovered states $bb\bar q\bar q$, $\bar bb\bar bb$, highly excited and hybrid $\bar bb$, baryons with bottom quarks and still-missing $B_{s}$ mesons.