Heavy flavor physics is a hot topic in high energy physics, not only because it provides a unique platform to precisely test quantum chromodynamics (QCD), electroweak (EW) interactions, and charge conjugation parity (CP) violation in the standard model (SM), but because it is also important for exploring possible indirect hints of new physics beyond the SM.

In most cases, researchers study heavy hadrons (mesons or baryons with one or more heavy flavor quarks) since open heavy flavor measurements are always contaminated by light quarks. To get reliable predictions, QCD factorization theory has been developed, which allows the decomposition of processes into short-distance perturbative and long-distance nonperturbative parts. In recent years, great progress and successes have been achieved in both theoretical and experimental aspects. However, high precision tests of SM and the search for possible new hints in heavy flavor windows are increasingly reliant on further improvements in theoretical frameworks and relevant phenomenological analyses.

Thus, the main goal of this Special Issue is to review the recent rapid progress in the field of heavy flavor physics. We encourage papers related to heavy flavor physics, CP violation, and effective theories dealing with multi-hadron interactions or heavy (doubly heavy) hadrons. We also hope to attract review articles that meet the state-of-the-art theoretical and phenomenological frames, and experimental analysis of heavy flavor physics and CP violation.

Potential topics include but are not limited to the following:

• Studies of the decay properties of heavy mesons B, Bs, or Bc
• Investigations of CP violations and determination of Cabibbo–Kobayashi–Maskawa (CKM) matrix elements
• Studies of the spectrum, production, and decay properties of heavy or doubly heavy baryons
• Production and decay properties of heavy quarkonium
• Heavy meson wave functions
• Heavy exotic hadrons
• Possible new physics hints in heavy flavor physics
• Experimental analysis of heavy flavor hadrons