Hadron Spectroscopy, exotics and $B_c^+$ physics at LHCb

TL;DR

This paper reviews LHCb's recent achievements in heavy hadron spectroscopy, including discoveries of exotic states and insights into $B_c^+$ physics, highlighting significant advancements in understanding heavy flavor particles.

Contribution

It provides a comprehensive overview of LHCb's latest experimental results on heavy hadron spectroscopy and $B_c^+$ physics, emphasizing new discoveries of exotic states and their implications.

Findings

Discovery of four strange exotic states decaying to $J/\psi \phi$

Identification of the first pentaquark states by LHCb

Unambiguous determination of the $Z_c(4430)^-$ as an exotic state

Abstract

The LHCb experiment is designed to study properties and decays of heavy flavored hadrons produced from $pp$ collisions at the LHC. During Run~1, it has recorded the world's largest data sample of beauty and charm hadrons, enabling precision spectroscopy studies of such particles. Several important results obtained by LHCb, such as the discovery of the first pentaquark states and the first unambiguous determination of the $Z_c(4430)^-$ as an exotic state, have dramatically increased the interest on spectroscopy of heavy hadrons. An overview of the latest LHCb results on the subject, including the discovery of four strange exotic states decaying as $X \to J/\psi \phi$, is presented. LHCb has also made significant contributions to the field of $B_c^+$ physics, the lowest bound state of the heavy flavor $\bar{b}$ and $c$ quarks. A synopsis of the the latest results is given.