The past decades witnessed the golden era of hadron physics. Many excited open heavy
flavor mesons and baryons have been observed since 2017. We shall provide an updated …

In the past decade many charmonium-like states were observed experimentally. Especially
those charged charmonium-like Z c states and bottomonium-like Z b states cannot be …

This review presents an overview of the remarkable progress in the field of heavy-quark
exotic hadrons over the past 15 years. It seeks to be pedagogical rather than exhaustive …

Chiral symmetry and its spontaneous breaking play an important role both in the light
hadron and heavy hadron systems. The chiral perturbation theory (χ PT) is the low energy …

Since the discovery of the first charmed meson in 1976, many open-charm and open-bottom
hadrons were observed. In 2003 two narrow charm-strange states $ D_ {s0}^{\ast}(2317) …

We review the effective field theory (EFT) approach to gravitational dynamics. We focus on
extended objects in long-wavelength backgrounds and gravitational wave emission from …

Quantum field theory describes basic physical phenomena over an extremely wide range of
length or energy scales. Quantum fields exist in space and time, which can be approximated …

We review the current status of heavy-quark symmetry and its applications to weak decays of
hadrons containing a single heavy quark. After an introduction to the underlying physical …

A bstract It has been shown recently that the anomalies observed in\(\overline {B}\to {D}^{\left
(*\right)}\tau {\overline {\nu}} _ {\tau}\) and\(\overline {B}\to\overline {K}{\ell}^{+}{\ell}^{-}\) …

We provide a rigorous basis for factorization for a large class of non-leptonic two-body B-
meson decays in the heavy-quark limit. The resulting factorization formula incorporates …